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Finding the Fourth Proportional to 408,438.60, 563,612.60 and 227,150.88

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Solution

The fourth proportional to 408,438.60, 563,612.60 and 227,150.88 is: 313,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,438.60 : 563,612.60 = 227,150.88 : x
  2. Step 2: Convert to fraction form
    408,438.60/563,612.60 = 227,150.88/x
  3. Step 3: Cross multiply
    408,438.60x = 563,612.60 × 227,150.88
  4. Step 4: Simplify right side
    408,438.60x = 128,025,098,069.09
  5. Step 5: Solve for x
    x = 128,025,098,069.09/408,438.60
  6. Step 6: Final answer
    x = 313,450.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.