Home / 219,917.40-329,974.53-126,423.15

Finding the Fourth Proportional to 219,917.40, 329,974.53 and 126,423.15

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Solution

The fourth proportional to 219,917.40, 329,974.53 and 126,423.15 is: 189,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,917.40 : 329,974.53 = 126,423.15 : x
  2. Step 2: Convert to fraction form
    219,917.40/329,974.53 = 126,423.15/x
  3. Step 3: Cross multiply
    219,917.40x = 329,974.53 × 126,423.15
  4. Step 4: Simplify right side
    219,917.40x = 41,716,419,502.37
  5. Step 5: Solve for x
    x = 41,716,419,502.37/219,917.40
  6. Step 6: Final answer
    x = 189,691.31

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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.