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Finding the Fourth Proportional to 352,613.43, 528,916.50 and 86,375.34

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Solution

The fourth proportional to 352,613.43, 528,916.50 and 86,375.34 is: 129,562.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,613.43 : 528,916.50 = 86,375.34 : x
  2. Step 2: Convert to fraction form
    352,613.43/528,916.50 = 86,375.34/x
  3. Step 3: Cross multiply
    352,613.43x = 528,916.50 × 86,375.34
  4. Step 4: Simplify right side
    352,613.43x = 45,685,342,519.11
  5. Step 5: Solve for x
    x = 45,685,342,519.11/352,613.43
  6. Step 6: Final answer
    x = 129,562.12

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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.