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Finding the Fourth Proportional to 380,630.34, 525,227.49 and 210,821.94

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Solution

The fourth proportional to 380,630.34, 525,227.49 and 210,821.94 is: 290,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,630.34 : 525,227.49 = 210,821.94 : x
  2. Step 2: Convert to fraction form
    380,630.34/525,227.49 = 210,821.94/x
  3. Step 3: Cross multiply
    380,630.34x = 525,227.49 × 210,821.94
  4. Step 4: Simplify right side
    380,630.34x = 110,729,478,383.13
  5. Step 5: Solve for x
    x = 110,729,478,383.13/380,630.34
  6. Step 6: Final answer
    x = 290,910.80

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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.