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Finding the Fourth Proportional to 266,537.70, 399,612.15 and 108,684.90

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Solution

The fourth proportional to 266,537.70, 399,612.15 and 108,684.90 is: 162,948.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,537.70 : 399,612.15 = 108,684.90 : x
  2. Step 2: Convert to fraction form
    266,537.70/399,612.15 = 108,684.90/x
  3. Step 3: Cross multiply
    266,537.70x = 399,612.15 × 108,684.90
  4. Step 4: Simplify right side
    266,537.70x = 43,431,806,561.54
  5. Step 5: Solve for x
    x = 43,431,806,561.54/266,537.70
  6. Step 6: Final answer
    x = 162,948.08

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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.