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Finding the Fourth Proportional to 442,234.60, 663,206.10 and 161,715.40

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Solution

The fourth proportional to 442,234.60, 663,206.10 and 161,715.40 is: 242,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,234.60 : 663,206.10 = 161,715.40 : x
  2. Step 2: Convert to fraction form
    442,234.60/663,206.10 = 161,715.40/x
  3. Step 3: Cross multiply
    442,234.60x = 663,206.10 × 161,715.40
  4. Step 4: Simplify right side
    442,234.60x = 107,250,639,743.94
  5. Step 5: Solve for x
    x = 107,250,639,743.94/442,234.60
  6. Step 6: Final answer
    x = 242,519.78

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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.