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Finding the Fourth Proportional to 444,856.40, 667,219.80 and 129,280.40

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Solution

The fourth proportional to 444,856.40, 667,219.80 and 129,280.40 is: 193,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,856.40 : 667,219.80 = 129,280.40 : x
  2. Step 2: Convert to fraction form
    444,856.40/667,219.80 = 129,280.40/x
  3. Step 3: Cross multiply
    444,856.40x = 667,219.80 × 129,280.40
  4. Step 4: Simplify right side
    444,856.40x = 86,258,442,631.92
  5. Step 5: Solve for x
    x = 86,258,442,631.92/444,856.40
  6. Step 6: Final answer
    x = 193,901.77

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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.