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Finding the Fourth Proportional to 288,630.68, 398,310.92 and 161,306.27

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Solution

The fourth proportional to 288,630.68, 398,310.92 and 161,306.27 is: 222,602.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,630.68 : 398,310.92 = 161,306.27 : x
  2. Step 2: Convert to fraction form
    288,630.68/398,310.92 = 161,306.27/x
  3. Step 3: Cross multiply
    288,630.68x = 398,310.92 × 161,306.27
  4. Step 4: Simplify right side
    288,630.68x = 64,250,048,105.95
  5. Step 5: Solve for x
    x = 64,250,048,105.95/288,630.68
  6. Step 6: Final answer
    x = 222,602.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.