Home / 260,823.80-391,235.70-127,789.40

Finding the Fourth Proportional to 260,823.80, 391,235.70 and 127,789.40

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Solution

The fourth proportional to 260,823.80, 391,235.70 and 127,789.40 is: 191,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,823.80 : 391,235.70 = 127,789.40 : x
  2. Step 2: Convert to fraction form
    260,823.80/391,235.70 = 127,789.40/x
  3. Step 3: Cross multiply
    260,823.80x = 391,235.70 × 127,789.40
  4. Step 4: Simplify right side
    260,823.80x = 49,995,775,361.58
  5. Step 5: Solve for x
    x = 49,995,775,361.58/260,823.80
  6. Step 6: Final answer
    x = 191,684.10

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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.