Home / 219,731.28-303,231.48-129,091.02

Finding the Fourth Proportional to 219,731.28, 303,231.48 and 129,091.02

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Solution

The fourth proportional to 219,731.28, 303,231.48 and 129,091.02 is: 178,146.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,731.28 : 303,231.48 = 129,091.02 : x
  2. Step 2: Convert to fraction form
    219,731.28/303,231.48 = 129,091.02/x
  3. Step 3: Cross multiply
    219,731.28x = 303,231.48 × 129,091.02
  4. Step 4: Simplify right side
    219,731.28x = 39,144,461,049.31
  5. Step 5: Solve for x
    x = 39,144,461,049.31/219,731.28
  6. Step 6: Final answer
    x = 178,146.97

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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.