Home / 311,220.78-466,831.56-86,581.32

Finding the Fourth Proportional to 311,220.78, 466,831.56 and 86,581.32

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Solution

The fourth proportional to 311,220.78, 466,831.56 and 86,581.32 is: 129,872.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,220.78 : 466,831.56 = 86,581.32 : x
  2. Step 2: Convert to fraction form
    311,220.78/466,831.56 = 86,581.32/x
  3. Step 3: Cross multiply
    311,220.78x = 466,831.56 × 86,581.32
  4. Step 4: Simplify right side
    311,220.78x = 40,418,892,682.46
  5. Step 5: Solve for x
    x = 40,418,892,682.46/311,220.78
  6. Step 6: Final answer
    x = 129,872.09

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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.