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Finding the Fourth Proportional to 442,136.20, 663,133.90 and 146,648.20

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Solution

The fourth proportional to 442,136.20, 663,133.90 and 146,648.20 is: 219,948.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,136.20 : 663,133.90 = 146,648.20 : x
  2. Step 2: Convert to fraction form
    442,136.20/663,133.90 = 146,648.20/x
  3. Step 3: Cross multiply
    442,136.20x = 663,133.90 × 146,648.20
  4. Step 4: Simplify right side
    442,136.20x = 97,247,392,793.98
  5. Step 5: Solve for x
    x = 97,247,392,793.98/442,136.20
  6. Step 6: Final answer
    x = 219,948.95

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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.