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Finding the Fourth Proportional to 323,143.71, 484,936.98 and 112,781.65

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Solution

The fourth proportional to 323,143.71, 484,936.98 and 112,781.65 is: 169,249.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,143.71 : 484,936.98 = 112,781.65 : x
  2. Step 2: Convert to fraction form
    323,143.71/484,936.98 = 112,781.65/x
  3. Step 3: Cross multiply
    323,143.71x = 484,936.98 × 112,781.65
  4. Step 4: Simplify right side
    323,143.71x = 54,691,989,761.82
  5. Step 5: Solve for x
    x = 54,691,989,761.82/323,143.71
  6. Step 6: Final answer
    x = 169,249.74

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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.