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Finding the Fourth Proportional to 266,959.40, 399,855.90 and 207,327.20

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Solution

The fourth proportional to 266,959.40, 399,855.90 and 207,327.20 is: 310,537.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,959.40 : 399,855.90 = 207,327.20 : x
  2. Step 2: Convert to fraction form
    266,959.40/399,855.90 = 207,327.20/x
  3. Step 3: Cross multiply
    266,959.40x = 399,855.90 × 207,327.20
  4. Step 4: Simplify right side
    266,959.40x = 82,901,004,150.48
  5. Step 5: Solve for x
    x = 82,901,004,150.48/266,959.40
  6. Step 6: Final answer
    x = 310,537.87

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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.