Home / 260,132.28-390,198.58-73,143.78

Finding the Fourth Proportional to 260,132.28, 390,198.58 and 73,143.78

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Solution

The fourth proportional to 260,132.28, 390,198.58 and 73,143.78 is: 109,715.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,132.28 : 390,198.58 = 73,143.78 : x
  2. Step 2: Convert to fraction form
    260,132.28/390,198.58 = 73,143.78/x
  3. Step 3: Cross multiply
    260,132.28x = 390,198.58 × 73,143.78
  4. Step 4: Simplify right side
    260,132.28x = 28,540,598,726.11
  5. Step 5: Solve for x
    x = 28,540,598,726.11/260,132.28
  6. Step 6: Final answer
    x = 109,715.71

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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.