Home / 219,916.40-329,973.03-126,422.15

Finding the Fourth Proportional to 219,916.40, 329,973.03 and 126,422.15

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Solution

The fourth proportional to 219,916.40, 329,973.03 and 126,422.15 is: 189,689.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,916.40 : 329,973.03 = 126,422.15 : x
  2. Step 2: Convert to fraction form
    219,916.40/329,973.03 = 126,422.15/x
  3. Step 3: Cross multiply
    219,916.40x = 329,973.03 × 126,422.15
  4. Step 4: Simplify right side
    219,916.40x = 41,715,898,244.75
  5. Step 5: Solve for x
    x = 41,715,898,244.75/219,916.40
  6. Step 6: Final answer
    x = 189,689.81

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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.