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Finding the Fourth Proportional to 260,880.30, 391,269.12 and 83,339.46

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Solution

The fourth proportional to 260,880.30, 391,269.12 and 83,339.46 is: 124,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,880.30 : 391,269.12 = 83,339.46 : x
  2. Step 2: Convert to fraction form
    260,880.30/391,269.12 = 83,339.46/x
  3. Step 3: Cross multiply
    260,880.30x = 391,269.12 × 83,339.46
  4. Step 4: Simplify right side
    260,880.30x = 32,608,157,175.48
  5. Step 5: Solve for x
    x = 32,608,157,175.48/260,880.30
  6. Step 6: Final answer
    x = 124,992.79

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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.