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Finding the Fourth Proportional to 445,086, 667,734 and 145,565.40

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Solution

The fourth proportional to 445,086, 667,734 and 145,565.40 is: 218,382.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,086 : 667,734 = 145,565.40 : x
  2. Step 2: Convert to fraction form
    445,086/667,734 = 145,565.40/x
  3. Step 3: Cross multiply
    445,086x = 667,734 × 145,565.40
  4. Step 4: Simplify right side
    445,086x = 97,198,966,803.60
  5. Step 5: Solve for x
    x = 97,198,966,803.60/445,086
  6. Step 6: Final answer
    x = 218,382.44

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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.