Home / 260,781.30-391,431.15-127,811.70

Finding the Fourth Proportional to 260,781.30, 391,431.15 and 127,811.70

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Solution

The fourth proportional to 260,781.30, 391,431.15 and 127,811.70 is: 191,844.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,781.30 : 391,431.15 = 127,811.70 : x
  2. Step 2: Convert to fraction form
    260,781.30/391,431.15 = 127,811.70/x
  3. Step 3: Cross multiply
    260,781.30x = 391,431.15 × 127,811.70
  4. Step 4: Simplify right side
    260,781.30x = 50,029,480,714.46
  5. Step 5: Solve for x
    x = 50,029,480,714.46/260,781.30
  6. Step 6: Final answer
    x = 191,844.59

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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.