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Finding the Fourth Proportional to 260,959.12, 391,442.28 and 73,970.56

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Solution

The fourth proportional to 260,959.12, 391,442.28 and 73,970.56 is: 110,956.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,959.12 : 391,442.28 = 73,970.56 : x
  2. Step 2: Convert to fraction form
    260,959.12/391,442.28 = 73,970.56/x
  3. Step 3: Cross multiply
    260,959.12x = 391,442.28 × 73,970.56
  4. Step 4: Simplify right side
    260,959.12x = 28,955,204,659.28
  5. Step 5: Solve for x
    x = 28,955,204,659.28/260,959.12
  6. Step 6: Final answer
    x = 110,956.86

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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.