Home / 231,407.20-346,419.60-137,864.80

Finding the Fourth Proportional to 231,407.20, 346,419.60 and 137,864.80

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Solution

The fourth proportional to 231,407.20, 346,419.60 and 137,864.80 is: 206,385.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,407.20 : 346,419.60 = 137,864.80 : x
  2. Step 2: Convert to fraction form
    231,407.20/346,419.60 = 137,864.80/x
  3. Step 3: Cross multiply
    231,407.20x = 346,419.60 × 137,864.80
  4. Step 4: Simplify right side
    231,407.20x = 47,759,068,870.08
  5. Step 5: Solve for x
    x = 47,759,068,870.08/231,407.20
  6. Step 6: Final answer
    x = 206,385.41

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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.