Home / 279,576.12-418,733.28-129,501.12

Finding the Fourth Proportional to 279,576.12, 418,733.28 and 129,501.12

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Solution

The fourth proportional to 279,576.12, 418,733.28 and 129,501.12 is: 193,959.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,576.12 : 418,733.28 = 129,501.12 : x
  2. Step 2: Convert to fraction form
    279,576.12/418,733.28 = 129,501.12/x
  3. Step 3: Cross multiply
    279,576.12x = 418,733.28 × 129,501.12
  4. Step 4: Simplify right side
    279,576.12x = 54,226,428,741.27
  5. Step 5: Solve for x
    x = 54,226,428,741.27/279,576.12
  6. Step 6: Final answer
    x = 193,959.44

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1.5x scale

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.