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Finding the Fourth Proportional to 266,127.80, 399,268.20 and 153,888.44

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Solution

The fourth proportional to 266,127.80, 399,268.20 and 153,888.44 is: 230,876.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,127.80 : 399,268.20 = 153,888.44 : x
  2. Step 2: Convert to fraction form
    266,127.80/399,268.20 = 153,888.44/x
  3. Step 3: Cross multiply
    266,127.80x = 399,268.20 × 153,888.44
  4. Step 4: Simplify right side
    266,127.80x = 61,442,760,439.61
  5. Step 5: Solve for x
    x = 61,442,760,439.61/266,127.80
  6. Step 6: Final answer
    x = 230,876.90

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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.