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Finding the Fourth Proportional to 260,793.30, 391,189.95 and 120,825.30

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Solution

The fourth proportional to 260,793.30, 391,189.95 and 120,825.30 is: 181,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,793.30 : 391,189.95 = 120,825.30 : x
  2. Step 2: Convert to fraction form
    260,793.30/391,189.95 = 120,825.30/x
  3. Step 3: Cross multiply
    260,793.30x = 391,189.95 × 120,825.30
  4. Step 4: Simplify right side
    260,793.30x = 47,265,643,065.74
  5. Step 5: Solve for x
    x = 47,265,643,065.74/260,793.30
  6. Step 6: Final answer
    x = 181,237.95

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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.