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Finding the Fourth Proportional to 577,115.46, 865,716.68 and 172,275.69

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Solution

The fourth proportional to 577,115.46, 865,716.68 and 172,275.69 is: 258,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,115.46 : 865,716.68 = 172,275.69 : x
  2. Step 2: Convert to fraction form
    577,115.46/865,716.68 = 172,275.69/x
  3. Step 3: Cross multiply
    577,115.46x = 865,716.68 × 172,275.69
  4. Step 4: Simplify right side
    577,115.46x = 149,141,938,822.20
  5. Step 5: Solve for x
    x = 149,141,938,822.20/577,115.46
  6. Step 6: Final answer
    x = 258,426.52

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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.