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Finding the Fourth Proportional to 437,611.96, 656,417.94 and 138,115.84

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Solution

The fourth proportional to 437,611.96, 656,417.94 and 138,115.84 is: 207,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,611.96 : 656,417.94 = 138,115.84 : x
  2. Step 2: Convert to fraction form
    437,611.96/656,417.94 = 138,115.84/x
  3. Step 3: Cross multiply
    437,611.96x = 656,417.94 × 138,115.84
  4. Step 4: Simplify right side
    437,611.96x = 90,661,715,174.17
  5. Step 5: Solve for x
    x = 90,661,715,174.17/437,611.96
  6. Step 6: Final answer
    x = 207,173.76

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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.