Home / 260,813.20-391,349.40-103,046.80

Finding the Fourth Proportional to 260,813.20, 391,349.40 and 103,046.80

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Solution

The fourth proportional to 260,813.20, 391,349.40 and 103,046.80 is: 154,621.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,813.20 : 391,349.40 = 103,046.80 : x
  2. Step 2: Convert to fraction form
    260,813.20/391,349.40 = 103,046.80/x
  3. Step 3: Cross multiply
    260,813.20x = 391,349.40 × 103,046.80
  4. Step 4: Simplify right side
    260,813.20x = 40,327,303,351.92
  5. Step 5: Solve for x
    x = 40,327,303,351.92/260,813.20
  6. Step 6: Final answer
    x = 154,621.40

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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.