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Finding the Fourth Proportional to 266,426.70, 399,445.65 and 108,573.90

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Solution

The fourth proportional to 266,426.70, 399,445.65 and 108,573.90 is: 162,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,426.70 : 399,445.65 = 108,573.90 : x
  2. Step 2: Convert to fraction form
    266,426.70/399,445.65 = 108,573.90/x
  3. Step 3: Cross multiply
    266,426.70x = 399,445.65 × 108,573.90
  4. Step 4: Simplify right side
    266,426.70x = 43,369,372,058.54
  5. Step 5: Solve for x
    x = 43,369,372,058.54/266,426.70
  6. Step 6: Final answer
    x = 162,781.63

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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.