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Finding the Fourth Proportional to 352,645.92, 528,968.90 and 86,404.14

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Solution

The fourth proportional to 352,645.92, 528,968.90 and 86,404.14 is: 129,606.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,645.92 : 528,968.90 = 86,404.14 : x
  2. Step 2: Convert to fraction form
    352,645.92/528,968.90 = 86,404.14/x
  3. Step 3: Cross multiply
    352,645.92x = 528,968.90 × 86,404.14
  4. Step 4: Simplify right side
    352,645.92x = 45,705,102,891.25
  5. Step 5: Solve for x
    x = 45,705,102,891.25/352,645.92
  6. Step 6: Final answer
    x = 129,606.21

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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.