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Finding the Fourth Proportional to 290,605.43, 435,909.53 and 88,203.29

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Solution

The fourth proportional to 290,605.43, 435,909.53 and 88,203.29 is: 132,305.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,605.43 : 435,909.53 = 88,203.29 : x
  2. Step 2: Convert to fraction form
    290,605.43/435,909.53 = 88,203.29/x
  3. Step 3: Cross multiply
    290,605.43x = 435,909.53 × 88,203.29
  4. Step 4: Simplify right side
    290,605.43x = 38,448,654,688.35
  5. Step 5: Solve for x
    x = 38,448,654,688.35/290,605.43
  6. Step 6: Final answer
    x = 132,305.36

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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.