Home / 442,921.20-664,381.80-147,433.20

Finding the Fourth Proportional to 442,921.20, 664,381.80 and 147,433.20

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Solution

The fourth proportional to 442,921.20, 664,381.80 and 147,433.20 is: 221,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,921.20 : 664,381.80 = 147,433.20 : x
  2. Step 2: Convert to fraction form
    442,921.20/664,381.80 = 147,433.20/x
  3. Step 3: Cross multiply
    442,921.20x = 664,381.80 × 147,433.20
  4. Step 4: Simplify right side
    442,921.20x = 97,951,934,795.76
  5. Step 5: Solve for x
    x = 97,951,934,795.76/442,921.20
  6. Step 6: Final answer
    x = 221,149.80

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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.