Home / 260,883.20-391,454.40-103,116.80

Finding the Fourth Proportional to 260,883.20, 391,454.40 and 103,116.80

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Solution

The fourth proportional to 260,883.20, 391,454.40 and 103,116.80 is: 154,726.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,883.20 : 391,454.40 = 103,116.80 : x
  2. Step 2: Convert to fraction form
    260,883.20/391,454.40 = 103,116.80/x
  3. Step 3: Cross multiply
    260,883.20x = 391,454.40 × 103,116.80
  4. Step 4: Simplify right side
    260,883.20x = 40,365,525,073.92
  5. Step 5: Solve for x
    x = 40,365,525,073.92/260,883.20
  6. Step 6: Final answer
    x = 154,726.43

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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.