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Finding the Fourth Proportional to 398,910.30, 598,241.52 and 132,606.60

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Solution

The fourth proportional to 398,910.30, 598,241.52 and 132,606.60 is: 198,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,910.30 : 598,241.52 = 132,606.60 : x
  2. Step 2: Convert to fraction form
    398,910.30/598,241.52 = 132,606.60/x
  3. Step 3: Cross multiply
    398,910.30x = 598,241.52 × 132,606.60
  4. Step 4: Simplify right side
    398,910.30x = 79,330,773,946.03
  5. Step 5: Solve for x
    x = 79,330,773,946.03/398,910.30
  6. Step 6: Final answer
    x = 198,868.70

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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.