Home / 260,837.10-391,255.65-127,648.80

Finding the Fourth Proportional to 260,837.10, 391,255.65 and 127,648.80

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Solution

The fourth proportional to 260,837.10, 391,255.65 and 127,648.80 is: 191,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,837.10 : 391,255.65 = 127,648.80 : x
  2. Step 2: Convert to fraction form
    260,837.10/391,255.65 = 127,648.80/x
  3. Step 3: Cross multiply
    260,837.10x = 391,255.65 × 127,648.80
  4. Step 4: Simplify right side
    260,837.10x = 49,943,314,215.72
  5. Step 5: Solve for x
    x = 49,943,314,215.72/260,837.10
  6. Step 6: Final answer
    x = 191,473.20

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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.