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Finding the Fourth Proportional to 266,566.73, 399,844.29 and 86,657.96

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Solution

The fourth proportional to 266,566.73, 399,844.29 and 86,657.96 is: 129,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,566.73 : 399,844.29 = 86,657.96 : x
  2. Step 2: Convert to fraction form
    266,566.73/399,844.29 = 86,657.96/x
  3. Step 3: Cross multiply
    266,566.73x = 399,844.29 × 86,657.96
  4. Step 4: Simplify right side
    266,566.73x = 34,649,688,489.83
  5. Step 5: Solve for x
    x = 34,649,688,489.83/266,566.73
  6. Step 6: Final answer
    x = 129,985.05

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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.