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Finding the Fourth Proportional to 266,530.26, 399,648.96 and 131,296.77

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Solution

The fourth proportional to 266,530.26, 399,648.96 and 131,296.77 is: 196,873.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,530.26 : 399,648.96 = 131,296.77 : x
  2. Step 2: Convert to fraction form
    266,530.26/399,648.96 = 131,296.77/x
  3. Step 3: Cross multiply
    266,530.26x = 399,648.96 × 131,296.77
  4. Step 4: Simplify right side
    266,530.26x = 52,472,615,583.61
  5. Step 5: Solve for x
    x = 52,472,615,583.61/266,530.26
  6. Step 6: Final answer
    x = 196,873.01

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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.