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Finding the Fourth Proportional to 408,464.56, 563,451.01 and 245,078.79

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Solution

The fourth proportional to 408,464.56, 563,451.01 and 245,078.79 is: 338,070.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,464.56 : 563,451.01 = 245,078.79 : x
  2. Step 2: Convert to fraction form
    408,464.56/563,451.01 = 245,078.79/x
  3. Step 3: Cross multiply
    408,464.56x = 563,451.01 × 245,078.79
  4. Step 4: Simplify right side
    408,464.56x = 138,089,891,755.08
  5. Step 5: Solve for x
    x = 138,089,891,755.08/408,464.56
  6. Step 6: Final answer
    x = 338,070.68

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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.