Home / 219,728.28-303,227.34-129,088.02

Finding the Fourth Proportional to 219,728.28, 303,227.34 and 129,088.02

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Solution

The fourth proportional to 219,728.28, 303,227.34 and 129,088.02 is: 178,142.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,728.28 : 303,227.34 = 129,088.02 : x
  2. Step 2: Convert to fraction form
    219,728.28/303,227.34 = 129,088.02/x
  3. Step 3: Cross multiply
    219,728.28x = 303,227.34 × 129,088.02
  4. Step 4: Simplify right side
    219,728.28x = 39,143,016,930.47
  5. Step 5: Solve for x
    x = 39,143,016,930.47/219,728.28
  6. Step 6: Final answer
    x = 178,142.83

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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.