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Finding the Fourth Proportional to 361,282.40, 542,230.80 and 161,909.60

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Solution

The fourth proportional to 361,282.40, 542,230.80 and 161,909.60 is: 243,002.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,282.40 : 542,230.80 = 161,909.60 : x
  2. Step 2: Convert to fraction form
    361,282.40/542,230.80 = 161,909.60/x
  3. Step 3: Cross multiply
    361,282.40x = 542,230.80 × 161,909.60
  4. Step 4: Simplify right side
    361,282.40x = 87,792,371,935.68
  5. Step 5: Solve for x
    x = 87,792,371,935.68/361,282.40
  6. Step 6: Final answer
    x = 243,002.07

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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.