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Finding the Fourth Proportional to 266,499.22, 399,775.71 and 86,577.16

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Solution

The fourth proportional to 266,499.22, 399,775.71 and 86,577.16 is: 129,874.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,499.22 : 399,775.71 = 86,577.16 : x
  2. Step 2: Convert to fraction form
    266,499.22/399,775.71 = 86,577.16/x
  3. Step 3: Cross multiply
    266,499.22x = 399,775.71 × 86,577.16
  4. Step 4: Simplify right side
    266,499.22x = 34,611,445,608.78
  5. Step 5: Solve for x
    x = 34,611,445,608.78/266,499.22
  6. Step 6: Final answer
    x = 129,874.47

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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.