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Finding the Fourth Proportional to 442,862.70, 664,358.85 and 143,292.30

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Solution

The fourth proportional to 442,862.70, 664,358.85 and 143,292.30 is: 214,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,862.70 : 664,358.85 = 143,292.30 : x
  2. Step 2: Convert to fraction form
    442,862.70/664,358.85 = 143,292.30/x
  3. Step 3: Cross multiply
    442,862.70x = 664,358.85 × 143,292.30
  4. Step 4: Simplify right side
    442,862.70x = 95,197,507,641.86
  5. Step 5: Solve for x
    x = 95,197,507,641.86/442,862.70
  6. Step 6: Final answer
    x = 214,959.42

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1.5x scale

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.