Home / 260,811.20-391,346.40-103,044.80

Finding the Fourth Proportional to 260,811.20, 391,346.40 and 103,044.80

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Solution

The fourth proportional to 260,811.20, 391,346.40 and 103,044.80 is: 154,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,811.20 : 391,346.40 = 103,044.80 : x
  2. Step 2: Convert to fraction form
    260,811.20/391,346.40 = 103,044.80/x
  3. Step 3: Cross multiply
    260,811.20x = 391,346.40 × 103,044.80
  4. Step 4: Simplify right side
    260,811.20x = 40,326,211,518.72
  5. Step 5: Solve for x
    x = 40,326,211,518.72/260,811.20
  6. Step 6: Final answer
    x = 154,618.40

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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.