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Finding the Fourth Proportional to 266,400.60, 399,827.70 and 108,742.20

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Solution

The fourth proportional to 266,400.60, 399,827.70 and 108,742.20 is: 163,205.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,400.60 : 399,827.70 = 108,742.20 : x
  2. Step 2: Convert to fraction form
    266,400.60/399,827.70 = 108,742.20/x
  3. Step 3: Cross multiply
    266,400.60x = 399,827.70 × 108,742.20
  4. Step 4: Simplify right side
    266,400.60x = 43,478,143,718.94
  5. Step 5: Solve for x
    x = 43,478,143,718.94/266,400.60
  6. Step 6: Final answer
    x = 163,205.88

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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.