Home / 231,247.28-346,657.80-81,405.92

Finding the Fourth Proportional to 231,247.28, 346,657.80 and 81,405.92

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Solution

The fourth proportional to 231,247.28, 346,657.80 and 81,405.92 is: 122,033.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,247.28 : 346,657.80 = 81,405.92 : x
  2. Step 2: Convert to fraction form
    231,247.28/346,657.80 = 81,405.92/x
  3. Step 3: Cross multiply
    231,247.28x = 346,657.80 × 81,405.92
  4. Step 4: Simplify right side
    231,247.28x = 28,219,997,134.18
  5. Step 5: Solve for x
    x = 28,219,997,134.18/231,247.28
  6. Step 6: Final answer
    x = 122,033.86

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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.