Home / 278,836.02-418,279.23-79,158.42

Finding the Fourth Proportional to 278,836.02, 418,279.23 and 79,158.42

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Solution

The fourth proportional to 278,836.02, 418,279.23 and 79,158.42 is: 118,744.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,836.02 : 418,279.23 = 79,158.42 : x
  2. Step 2: Convert to fraction form
    278,836.02/418,279.23 = 79,158.42/x
  3. Step 3: Cross multiply
    278,836.02x = 418,279.23 × 79,158.42
  4. Step 4: Simplify right side
    278,836.02x = 33,110,322,965.62
  5. Step 5: Solve for x
    x = 33,110,322,965.62/278,836.02
  6. Step 6: Final answer
    x = 118,744.78

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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.