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Finding the Fourth Proportional to 399,172.68, 598,854.87 and 132,935.58

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Solution

The fourth proportional to 399,172.68, 598,854.87 and 132,935.58 is: 199,435.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,172.68 : 598,854.87 = 132,935.58 : x
  2. Step 2: Convert to fraction form
    399,172.68/598,854.87 = 132,935.58/x
  3. Step 3: Cross multiply
    399,172.68x = 598,854.87 × 132,935.58
  4. Step 4: Simplify right side
    399,172.68x = 79,609,119,479.27
  5. Step 5: Solve for x
    x = 79,609,119,479.27/399,172.68
  6. Step 6: Final answer
    x = 199,435.29

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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.