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Finding the Fourth Proportional to 383,812.80, 575,233.20 and 146,839.20

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Solution

The fourth proportional to 383,812.80, 575,233.20 and 146,839.20 is: 220,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,812.80 : 575,233.20 = 146,839.20 : x
  2. Step 2: Convert to fraction form
    383,812.80/575,233.20 = 146,839.20/x
  3. Step 3: Cross multiply
    383,812.80x = 575,233.20 × 146,839.20
  4. Step 4: Simplify right side
    383,812.80x = 84,466,782,901.44
  5. Step 5: Solve for x
    x = 84,466,782,901.44/383,812.80
  6. Step 6: Final answer
    x = 220,072.87

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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.