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Finding the Fourth Proportional to 521,315.52, 719,248.11 and 291,839.01

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Solution

The fourth proportional to 521,315.52, 719,248.11 and 291,839.01 is: 402,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,315.52 : 719,248.11 = 291,839.01 : x
  2. Step 2: Convert to fraction form
    521,315.52/719,248.11 = 291,839.01/x
  3. Step 3: Cross multiply
    521,315.52x = 719,248.11 × 291,839.01
  4. Step 4: Simplify right side
    521,315.52x = 209,904,656,366.77
  5. Step 5: Solve for x
    x = 209,904,656,366.77/521,315.52
  6. Step 6: Final answer
    x = 402,644.17

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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.