Home / 278,279.04-383,902.68-187,601.88

Finding the Fourth Proportional to 278,279.04, 383,902.68 and 187,601.88

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Solution

The fourth proportional to 278,279.04, 383,902.68 and 187,601.88 is: 258,808.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,279.04 : 383,902.68 = 187,601.88 : x
  2. Step 2: Convert to fraction form
    278,279.04/383,902.68 = 187,601.88/x
  3. Step 3: Cross multiply
    278,279.04x = 383,902.68 × 187,601.88
  4. Step 4: Simplify right side
    278,279.04x = 72,020,864,505.04
  5. Step 5: Solve for x
    x = 72,020,864,505.04/278,279.04
  6. Step 6: Final answer
    x = 258,808.08

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1.5x scale

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.