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Finding the Fourth Proportional to 352,644.92, 528,967.40 and 86,403.14

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Solution

The fourth proportional to 352,644.92, 528,967.40 and 86,403.14 is: 129,604.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,644.92 : 528,967.40 = 86,403.14 : x
  2. Step 2: Convert to fraction form
    352,644.92/528,967.40 = 86,403.14/x
  3. Step 3: Cross multiply
    352,644.92x = 528,967.40 × 86,403.14
  4. Step 4: Simplify right side
    352,644.92x = 45,704,443,224.41
  5. Step 5: Solve for x
    x = 45,704,443,224.41/352,644.92
  6. Step 6: Final answer
    x = 129,604.71

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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.