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Finding the Fourth Proportional to 260,866.80, 391,248.90 and 83,325.96

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Solution

The fourth proportional to 260,866.80, 391,248.90 and 83,325.96 is: 124,972.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,866.80 : 391,248.90 = 83,325.96 : x
  2. Step 2: Convert to fraction form
    260,866.80/391,248.90 = 83,325.96/x
  3. Step 3: Cross multiply
    260,866.80x = 391,248.90 × 83,325.96
  4. Step 4: Simplify right side
    260,866.80x = 32,601,190,191.44
  5. Step 5: Solve for x
    x = 32,601,190,191.44/260,866.80
  6. Step 6: Final answer
    x = 124,972.55

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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.