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Finding the Fourth Proportional to 447,115.20, 670,672.80 and 114,691.20

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Solution

The fourth proportional to 447,115.20, 670,672.80 and 114,691.20 is: 172,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,115.20 : 670,672.80 = 114,691.20 : x
  2. Step 2: Convert to fraction form
    447,115.20/670,672.80 = 114,691.20/x
  3. Step 3: Cross multiply
    447,115.20x = 670,672.80 × 114,691.20
  4. Step 4: Simplify right side
    447,115.20x = 76,920,268,239.36
  5. Step 5: Solve for x
    x = 76,920,268,239.36/447,115.20
  6. Step 6: Final answer
    x = 172,036.80

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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.