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Finding the Fourth Proportional to 316,520.44, 474,785.72 and 103,287.54

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Solution

The fourth proportional to 316,520.44, 474,785.72 and 103,287.54 is: 154,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,520.44 : 474,785.72 = 103,287.54 : x
  2. Step 2: Convert to fraction form
    316,520.44/474,785.72 = 103,287.54/x
  3. Step 3: Cross multiply
    316,520.44x = 474,785.72 × 103,287.54
  4. Step 4: Simplify right side
    316,520.44x = 49,039,449,045.93
  5. Step 5: Solve for x
    x = 49,039,449,045.93/316,520.44
  6. Step 6: Final answer
    x = 154,932.96

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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.