Home / 278,272.60-383,878.88-187,512.10

Finding the Fourth Proportional to 278,272.60, 383,878.88 and 187,512.10

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Solution

The fourth proportional to 278,272.60, 383,878.88 and 187,512.10 is: 258,674.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,272.60 : 383,878.88 = 187,512.10 : x
  2. Step 2: Convert to fraction form
    278,272.60/383,878.88 = 187,512.10/x
  3. Step 3: Cross multiply
    278,272.60x = 383,878.88 × 187,512.10
  4. Step 4: Simplify right side
    278,272.60x = 71,981,934,934.45
  5. Step 5: Solve for x
    x = 71,981,934,934.45/278,272.60
  6. Step 6: Final answer
    x = 258,674.17

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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.