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Finding the Fourth Proportional to 445,062.20, 667,658.10 and 145,470.20

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Solution

The fourth proportional to 445,062.20, 667,658.10 and 145,470.20 is: 218,226.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,062.20 : 667,658.10 = 145,470.20 : x
  2. Step 2: Convert to fraction form
    445,062.20/667,658.10 = 145,470.20/x
  3. Step 3: Cross multiply
    445,062.20x = 667,658.10 × 145,470.20
  4. Step 4: Simplify right side
    445,062.20x = 97,124,357,338.62
  5. Step 5: Solve for x
    x = 97,124,357,338.62/445,062.20
  6. Step 6: Final answer
    x = 218,226.48

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1.5x scale

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.