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Finding the Fourth Proportional to 260,324.17, 390,486.35 and 82,831.30

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Solution

The fourth proportional to 260,324.17, 390,486.35 and 82,831.30 is: 124,246.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,324.17 : 390,486.35 = 82,831.30 : x
  2. Step 2: Convert to fraction form
    260,324.17/390,486.35 = 82,831.30/x
  3. Step 3: Cross multiply
    260,324.17x = 390,486.35 × 82,831.30
  4. Step 4: Simplify right side
    260,324.17x = 32,344,491,233.62
  5. Step 5: Solve for x
    x = 32,344,491,233.62/260,324.17
  6. Step 6: Final answer
    x = 124,246.98

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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.