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Finding the Fourth Proportional to 266,081.44, 399,005.04 and 99,752.80

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Solution

The fourth proportional to 266,081.44, 399,005.04 and 99,752.80 is: 149,585.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,081.44 : 399,005.04 = 99,752.80 : x
  2. Step 2: Convert to fraction form
    266,081.44/399,005.04 = 99,752.80/x
  3. Step 3: Cross multiply
    266,081.44x = 399,005.04 × 99,752.80
  4. Step 4: Simplify right side
    266,081.44x = 39,801,869,954.11
  5. Step 5: Solve for x
    x = 39,801,869,954.11/266,081.44
  6. Step 6: Final answer
    x = 149,585.29

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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.