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Finding the Fourth Proportional to 445,240, 667,898.88 and 112,816

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Solution

The fourth proportional to 445,240, 667,898.88 and 112,816 is: 169,233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,240 : 667,898.88 = 112,816 : x
  2. Step 2: Convert to fraction form
    445,240/667,898.88 = 112,816/x
  3. Step 3: Cross multiply
    445,240x = 667,898.88 × 112,816
  4. Step 4: Simplify right side
    445,240x = 75,349,680,046.08
  5. Step 5: Solve for x
    x = 75,349,680,046.08/445,240
  6. Step 6: Final answer
    x = 169,233.85

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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.