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Finding the Fourth Proportional to 266,743.60, 399,240.60 and 207,257.20

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Solution

The fourth proportional to 266,743.60, 399,240.60 and 207,257.20 is: 310,206.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,743.60 : 399,240.60 = 207,257.20 : x
  2. Step 2: Convert to fraction form
    266,743.60/399,240.60 = 207,257.20/x
  3. Step 3: Cross multiply
    266,743.60x = 399,240.60 × 207,257.20
  4. Step 4: Simplify right side
    266,743.60x = 82,745,488,882.32
  5. Step 5: Solve for x
    x = 82,745,488,882.32/266,743.60
  6. Step 6: Final answer
    x = 310,206.09

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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.