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Finding the Fourth Proportional to 200,440.40, 300,660.60 and 129,581.60

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Solution

The fourth proportional to 200,440.40, 300,660.60 and 129,581.60 is: 194,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,440.40 : 300,660.60 = 129,581.60 : x
  2. Step 2: Convert to fraction form
    200,440.40/300,660.60 = 129,581.60/x
  3. Step 3: Cross multiply
    200,440.40x = 300,660.60 × 129,581.60
  4. Step 4: Simplify right side
    200,440.40x = 38,960,081,604.96
  5. Step 5: Solve for x
    x = 38,960,081,604.96/200,440.40
  6. Step 6: Final answer
    x = 194,372.40

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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.