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Finding the Fourth Proportional to 323,706.88, 485,757.15 and 136,718.38

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Solution

The fourth proportional to 323,706.88, 485,757.15 and 136,718.38 is: 205,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,706.88 : 485,757.15 = 136,718.38 : x
  2. Step 2: Convert to fraction form
    323,706.88/485,757.15 = 136,718.38/x
  3. Step 3: Cross multiply
    323,706.88x = 485,757.15 × 136,718.38
  4. Step 4: Simplify right side
    323,706.88x = 66,411,927,509.04
  5. Step 5: Solve for x
    x = 66,411,927,509.04/323,706.88
  6. Step 6: Final answer
    x = 205,160.70

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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.