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Finding the Fourth Proportional to 266,449.49, 399,958.78 and 114,721.66

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Solution

The fourth proportional to 266,449.49, 399,958.78 and 114,721.66 is: 172,205.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,449.49 : 399,958.78 = 114,721.66 : x
  2. Step 2: Convert to fraction form
    266,449.49/399,958.78 = 114,721.66/x
  3. Step 3: Cross multiply
    266,449.49x = 399,958.78 × 114,721.66
  4. Step 4: Simplify right side
    266,449.49x = 45,883,933,886.47
  5. Step 5: Solve for x
    x = 45,883,933,886.47/266,449.49
  6. Step 6: Final answer
    x = 172,205.00

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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.