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Finding the Fourth Proportional to 266,908.11, 399,947.45 and 168,204.75

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Solution

The fourth proportional to 266,908.11, 399,947.45 and 168,204.75 is: 252,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,908.11 : 399,947.45 = 168,204.75 : x
  2. Step 2: Convert to fraction form
    266,908.11/399,947.45 = 168,204.75/x
  3. Step 3: Cross multiply
    266,908.11x = 399,947.45 × 168,204.75
  4. Step 4: Simplify right side
    266,908.11x = 67,273,059,999.36
  5. Step 5: Solve for x
    x = 67,273,059,999.36/266,908.11
  6. Step 6: Final answer
    x = 252,045.77

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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.