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Finding the Fourth Proportional to 487,773.29, 731,666.16 and 172,008.77

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Solution

The fourth proportional to 487,773.29, 731,666.16 and 172,008.77 is: 258,015.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,773.29 : 731,666.16 = 172,008.77 : x
  2. Step 2: Convert to fraction form
    487,773.29/731,666.16 = 172,008.77/x
  3. Step 3: Cross multiply
    487,773.29x = 731,666.16 × 172,008.77
  4. Step 4: Simplify right side
    487,773.29x = 125,852,996,232.22
  5. Step 5: Solve for x
    x = 125,852,996,232.22/487,773.29
  6. Step 6: Final answer
    x = 258,015.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.