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Finding the Fourth Proportional to 508,354.32, 701,505.28 and 278,906.43

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Solution

The fourth proportional to 508,354.32, 701,505.28 and 278,906.43 is: 384,877.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,354.32 : 701,505.28 = 278,906.43 : x
  2. Step 2: Convert to fraction form
    508,354.32/701,505.28 = 278,906.43/x
  3. Step 3: Cross multiply
    508,354.32x = 701,505.28 × 278,906.43
  4. Step 4: Simplify right side
    508,354.32x = 195,654,332,573.68
  5. Step 5: Solve for x
    x = 195,654,332,573.68/508,354.32
  6. Step 6: Final answer
    x = 384,877.88

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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.