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Finding the Fourth Proportional to 266,314.20, 399,276.90 and 108,461.40

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Solution

The fourth proportional to 266,314.20, 399,276.90 and 108,461.40 is: 162,612.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,314.20 : 399,276.90 = 108,461.40 : x
  2. Step 2: Convert to fraction form
    266,314.20/399,276.90 = 108,461.40/x
  3. Step 3: Cross multiply
    266,314.20x = 399,276.90 × 108,461.40
  4. Step 4: Simplify right side
    266,314.20x = 43,306,131,561.66
  5. Step 5: Solve for x
    x = 43,306,131,561.66/266,314.20
  6. Step 6: Final answer
    x = 162,612.93

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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.