Home / 279,034.24-418,616.98-86,899

Finding the Fourth Proportional to 279,034.24, 418,616.98 and 86,899

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Solution

The fourth proportional to 279,034.24, 418,616.98 and 86,899 is: 130,368.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,034.24 : 418,616.98 = 86,899 : x
  2. Step 2: Convert to fraction form
    279,034.24/418,616.98 = 86,899/x
  3. Step 3: Cross multiply
    279,034.24x = 418,616.98 × 86,899
  4. Step 4: Simplify right side
    279,034.24x = 36,377,396,945.02
  5. Step 5: Solve for x
    x = 36,377,396,945.02/279,034.24
  6. Step 6: Final answer
    x = 130,368.94

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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.