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Finding the Fourth Proportional to 442,862.76, 664,399.59 and 143,343.39

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Solution

The fourth proportional to 442,862.76, 664,399.59 and 143,343.39 is: 215,049.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,862.76 : 664,399.59 = 143,343.39 : x
  2. Step 2: Convert to fraction form
    442,862.76/664,399.59 = 143,343.39/x
  3. Step 3: Cross multiply
    442,862.76x = 664,399.59 × 143,343.39
  4. Step 4: Simplify right side
    442,862.76x = 95,237,289,545.21
  5. Step 5: Solve for x
    x = 95,237,289,545.21/442,862.76
  6. Step 6: Final answer
    x = 215,049.22

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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.