Home / 278,764.20-385,010.79-187,963.59

Finding the Fourth Proportional to 278,764.20, 385,010.79 and 187,963.59

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Solution

The fourth proportional to 278,764.20, 385,010.79 and 187,963.59 is: 259,602.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,764.20 : 385,010.79 = 187,963.59 : x
  2. Step 2: Convert to fraction form
    278,764.20/385,010.79 = 187,963.59/x
  3. Step 3: Cross multiply
    278,764.20x = 385,010.79 × 187,963.59
  4. Step 4: Simplify right side
    278,764.20x = 72,368,010,277.14
  5. Step 5: Solve for x
    x = 72,368,010,277.14/278,764.20
  6. Step 6: Final answer
    x = 259,602.96

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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.