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Finding the Fourth Proportional to 383,790.80, 575,200.20 and 146,817.20

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Solution

The fourth proportional to 383,790.80, 575,200.20 and 146,817.20 is: 220,039.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,790.80 : 575,200.20 = 146,817.20 : x
  2. Step 2: Convert to fraction form
    383,790.80/575,200.20 = 146,817.20/x
  3. Step 3: Cross multiply
    383,790.80x = 575,200.20 × 146,817.20
  4. Step 4: Simplify right side
    383,790.80x = 84,449,282,803.44
  5. Step 5: Solve for x
    x = 84,449,282,803.44/383,790.80
  6. Step 6: Final answer
    x = 220,039.88

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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.