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Finding the Fourth Proportional to 394,792.80, 592,189.20 and 268,821.60

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Solution

The fourth proportional to 394,792.80, 592,189.20 and 268,821.60 is: 403,232.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,792.80 : 592,189.20 = 268,821.60 : x
  2. Step 2: Convert to fraction form
    394,792.80/592,189.20 = 268,821.60/x
  3. Step 3: Cross multiply
    394,792.80x = 592,189.20 × 268,821.60
  4. Step 4: Simplify right side
    394,792.80x = 159,193,248,246.72
  5. Step 5: Solve for x
    x = 159,193,248,246.72/394,792.80
  6. Step 6: Final answer
    x = 403,232.40

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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.