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Finding the Fourth Proportional to 508,753.90, 702,091.02 and 279,320.32

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Solution

The fourth proportional to 508,753.90, 702,091.02 and 279,320.32 is: 385,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,753.90 : 702,091.02 = 279,320.32 : x
  2. Step 2: Convert to fraction form
    508,753.90/702,091.02 = 279,320.32/x
  3. Step 3: Cross multiply
    508,753.90x = 702,091.02 × 279,320.32
  4. Step 4: Simplify right side
    508,753.90x = 196,108,288,375.53
  5. Step 5: Solve for x
    x = 196,108,288,375.53/508,753.90
  6. Step 6: Final answer
    x = 385,467.88

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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.