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Finding the Fourth Proportional to 442,152.60, 663,358.05 and 142,626.53

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Solution

The fourth proportional to 442,152.60, 663,358.05 and 142,626.53 is: 213,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,152.60 : 663,358.05 = 142,626.53 : x
  2. Step 2: Convert to fraction form
    442,152.60/663,358.05 = 142,626.53/x
  3. Step 3: Cross multiply
    442,152.60x = 663,358.05 × 142,626.53
  4. Step 4: Simplify right side
    442,152.60x = 94,612,453,502.28
  5. Step 5: Solve for x
    x = 94,612,453,502.28/442,152.60
  6. Step 6: Final answer
    x = 213,981.45

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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.