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Finding the Fourth Proportional to 442,152.84, 663,358.44 and 142,626.76

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Solution

The fourth proportional to 442,152.84, 663,358.44 and 142,626.76 is: 213,981.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,152.84 : 663,358.44 = 142,626.76 : x
  2. Step 2: Convert to fraction form
    442,152.84/663,358.44 = 142,626.76/x
  3. Step 3: Cross multiply
    442,152.84x = 663,358.44 × 142,626.76
  4. Step 4: Simplify right side
    442,152.84x = 94,612,665,015.85
  5. Step 5: Solve for x
    x = 94,612,665,015.85/442,152.84
  6. Step 6: Final answer
    x = 213,981.81

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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.