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Finding the Fourth Proportional to 408,638.52, 563,786.73 and 247,432.32

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Solution

The fourth proportional to 408,638.52, 563,786.73 and 247,432.32 is: 341,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,638.52 : 563,786.73 = 247,432.32 : x
  2. Step 2: Convert to fraction form
    408,638.52/563,786.73 = 247,432.32/x
  3. Step 3: Cross multiply
    408,638.52x = 563,786.73 × 247,432.32
  4. Step 4: Simplify right side
    408,638.52x = 139,499,058,589.11
  5. Step 5: Solve for x
    x = 139,499,058,589.11/408,638.52
  6. Step 6: Final answer
    x = 341,375.21

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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.