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Finding the Fourth Proportional to 266,427.90, 399,690.45 and 108,672.30

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Solution

The fourth proportional to 266,427.90, 399,690.45 and 108,672.30 is: 163,028.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,427.90 : 399,690.45 = 108,672.30 : x
  2. Step 2: Convert to fraction form
    266,427.90/399,690.45 = 108,672.30/x
  3. Step 3: Cross multiply
    266,427.90x = 399,690.45 × 108,672.30
  4. Step 4: Simplify right side
    266,427.90x = 43,435,280,489.54
  5. Step 5: Solve for x
    x = 43,435,280,489.54/266,427.90
  6. Step 6: Final answer
    x = 163,028.27

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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.