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Finding the Fourth Proportional to 361,616.80, 542,425.20 and 98,960.80

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Solution

The fourth proportional to 361,616.80, 542,425.20 and 98,960.80 is: 148,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,616.80 : 542,425.20 = 98,960.80 : x
  2. Step 2: Convert to fraction form
    361,616.80/542,425.20 = 98,960.80/x
  3. Step 3: Cross multiply
    361,616.80x = 542,425.20 × 98,960.80
  4. Step 4: Simplify right side
    361,616.80x = 53,678,831,732.16
  5. Step 5: Solve for x
    x = 53,678,831,732.16/361,616.80
  6. Step 6: Final answer
    x = 148,441.20

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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.