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Finding the Fourth Proportional to 290,147.72, 435,355.68 and 132,424.52

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Solution

The fourth proportional to 290,147.72, 435,355.68 and 132,424.52 is: 198,697.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,147.72 : 435,355.68 = 132,424.52 : x
  2. Step 2: Convert to fraction form
    290,147.72/435,355.68 = 132,424.52/x
  3. Step 3: Cross multiply
    290,147.72x = 435,355.68 × 132,424.52
  4. Step 4: Simplify right side
    290,147.72x = 57,651,766,953.27
  5. Step 5: Solve for x
    x = 57,651,766,953.27/290,147.72
  6. Step 6: Final answer
    x = 198,697.98

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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.