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Finding the Fourth Proportional to 290,665.04, 435,969.37 and 88,262.90

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Solution

The fourth proportional to 290,665.04, 435,969.37 and 88,262.90 is: 132,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,665.04 : 435,969.37 = 88,262.90 : x
  2. Step 2: Convert to fraction form
    290,665.04/435,969.37 = 88,262.90/x
  3. Step 3: Cross multiply
    290,665.04x = 435,969.37 × 88,262.90
  4. Step 4: Simplify right side
    290,665.04x = 38,479,918,286.21
  5. Step 5: Solve for x
    x = 38,479,918,286.21/290,665.04
  6. Step 6: Final answer
    x = 132,385.78

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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.