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Finding the Fourth Proportional to 373,822.97, 515,859.84 and 220,910.76

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Solution

The fourth proportional to 373,822.97, 515,859.84 and 220,910.76 is: 304,847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,822.97 : 515,859.84 = 220,910.76 : x
  2. Step 2: Convert to fraction form
    373,822.97/515,859.84 = 220,910.76/x
  3. Step 3: Cross multiply
    373,822.97x = 515,859.84 × 220,910.76
  4. Step 4: Simplify right side
    373,822.97x = 113,958,989,307.88
  5. Step 5: Solve for x
    x = 113,958,989,307.88/373,822.97
  6. Step 6: Final answer
    x = 304,847.48

Related Problems

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Half scale
Find fourth proportional to 747,645.93, 1,031,719.68 and 441,821.52
Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.