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Finding the Fourth Proportional to 361,280.79, 541,982.07 and 133,589.79

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Solution

The fourth proportional to 361,280.79, 541,982.07 and 133,589.79 is: 200,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,280.79 : 541,982.07 = 133,589.79 : x
  2. Step 2: Convert to fraction form
    361,280.79/541,982.07 = 133,589.79/x
  3. Step 3: Cross multiply
    361,280.79x = 541,982.07 × 133,589.79
  4. Step 4: Simplify right side
    361,280.79x = 72,403,270,915.07
  5. Step 5: Solve for x
    x = 72,403,270,915.07/361,280.79
  6. Step 6: Final answer
    x = 200,407.20

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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.