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Finding the Fourth Proportional to 352,398.32, 528,597.48 and 86,155.68

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Solution

The fourth proportional to 352,398.32, 528,597.48 and 86,155.68 is: 129,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,398.32 : 528,597.48 = 86,155.68 : x
  2. Step 2: Convert to fraction form
    352,398.32/528,597.48 = 86,155.68/x
  3. Step 3: Cross multiply
    352,398.32x = 528,597.48 × 86,155.68
  4. Step 4: Simplify right side
    352,398.32x = 45,541,675,335.69
  5. Step 5: Solve for x
    x = 45,541,675,335.69/352,398.32
  6. Step 6: Final answer
    x = 129,233.52

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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.