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Finding the Fourth Proportional to 472,221.82, 651,649.44 and 257,357.62

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Solution

The fourth proportional to 472,221.82, 651,649.44 and 257,357.62 is: 355,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,221.82 : 651,649.44 = 257,357.62 : x
  2. Step 2: Convert to fraction form
    472,221.82/651,649.44 = 257,357.62/x
  3. Step 3: Cross multiply
    472,221.82x = 651,649.44 × 257,357.62
  4. Step 4: Simplify right side
    472,221.82x = 167,706,948,952.73
  5. Step 5: Solve for x
    x = 167,706,948,952.73/472,221.82
  6. Step 6: Final answer
    x = 355,144.43

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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.