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Finding the Fourth Proportional to 266,500.36, 399,572.70 and 108,686.44

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Solution

The fourth proportional to 266,500.36, 399,572.70 and 108,686.44 is: 162,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,500.36 : 399,572.70 = 108,686.44 : x
  2. Step 2: Convert to fraction form
    266,500.36/399,572.70 = 108,686.44/x
  3. Step 3: Cross multiply
    266,500.36x = 399,572.70 × 108,686.44
  4. Step 4: Simplify right side
    266,500.36x = 43,428,134,284.19
  5. Step 5: Solve for x
    x = 43,428,134,284.19/266,500.36
  6. Step 6: Final answer
    x = 162,957.13

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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.