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Finding the Fourth Proportional to 408,463.56, 563,449.64 and 245,077.79

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Solution

The fourth proportional to 408,463.56, 563,449.64 and 245,077.79 is: 338,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,463.56 : 563,449.64 = 245,077.79 : x
  2. Step 2: Convert to fraction form
    408,463.56/563,449.64 = 245,077.79/x
  3. Step 3: Cross multiply
    408,463.56x = 563,449.64 × 245,077.79
  4. Step 4: Simplify right side
    408,463.56x = 138,088,988,504.86
  5. Step 5: Solve for x
    x = 138,088,988,504.86/408,463.56
  6. Step 6: Final answer
    x = 338,069.30

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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.