Home / 219,836.38-303,357-129,195.76

Finding the Fourth Proportional to 219,836.38, 303,357 and 129,195.76

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Solution

The fourth proportional to 219,836.38, 303,357 and 129,195.76 is: 178,280.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,836.38 : 303,357 = 129,195.76 : x
  2. Step 2: Convert to fraction form
    219,836.38/303,357 = 129,195.76/x
  3. Step 3: Cross multiply
    219,836.38x = 303,357 × 129,195.76
  4. Step 4: Simplify right side
    219,836.38x = 39,192,438,166.32
  5. Step 5: Solve for x
    x = 39,192,438,166.32/219,836.38
  6. Step 6: Final answer
    x = 178,280.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.