Home / 279,213.52-418,867.32-129,393.04

Finding the Fourth Proportional to 279,213.52, 418,867.32 and 129,393.04

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Solution

The fourth proportional to 279,213.52, 418,867.32 and 129,393.04 is: 194,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,213.52 : 418,867.32 = 129,393.04 : x
  2. Step 2: Convert to fraction form
    279,213.52/418,867.32 = 129,393.04/x
  3. Step 3: Cross multiply
    279,213.52x = 418,867.32 × 129,393.04
  4. Step 4: Simplify right side
    279,213.52x = 54,198,515,891.45
  5. Step 5: Solve for x
    x = 54,198,515,891.45/279,213.52
  6. Step 6: Final answer
    x = 194,111.36

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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.