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Finding the Fourth Proportional to 447,169.80, 670,523.88 and 131,585.76

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Solution

The fourth proportional to 447,169.80, 670,523.88 and 131,585.76 is: 197,310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,169.80 : 670,523.88 = 131,585.76 : x
  2. Step 2: Convert to fraction form
    447,169.80/670,523.88 = 131,585.76/x
  3. Step 3: Cross multiply
    447,169.80x = 670,523.88 × 131,585.76
  4. Step 4: Simplify right side
    447,169.80x = 88,231,394,347.95
  5. Step 5: Solve for x
    x = 88,231,394,347.95/447,169.80
  6. Step 6: Final answer
    x = 197,310.72

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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.