Home / 278,758.80-418,154.04-79,063.38

Finding the Fourth Proportional to 278,758.80, 418,154.04 and 79,063.38

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Solution

The fourth proportional to 278,758.80, 418,154.04 and 79,063.38 is: 118,599.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,758.80 : 418,154.04 = 79,063.38 : x
  2. Step 2: Convert to fraction form
    278,758.80/418,154.04 = 79,063.38/x
  3. Step 3: Cross multiply
    278,758.80x = 418,154.04 × 79,063.38
  4. Step 4: Simplify right side
    278,758.80x = 33,060,671,763.06
  5. Step 5: Solve for x
    x = 33,060,671,763.06/278,758.80
  6. Step 6: Final answer
    x = 118,599.56

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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.