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Finding the Fourth Proportional to 378,081.61, 567,122.42 and 311,253.73

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Solution

The fourth proportional to 378,081.61, 567,122.42 and 311,253.73 is: 466,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,081.61 : 567,122.42 = 311,253.73 : x
  2. Step 2: Convert to fraction form
    378,081.61/567,122.42 = 311,253.73/x
  3. Step 3: Cross multiply
    378,081.61x = 567,122.42 × 311,253.73
  4. Step 4: Simplify right side
    378,081.61x = 176,518,967,951.96
  5. Step 5: Solve for x
    x = 176,518,967,951.96/378,081.61
  6. Step 6: Final answer
    x = 466,880.60

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Double scale
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Similar ratio
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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.