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Finding the Fourth Proportional to 408,181.98, 563,336.70 and 247,125.78

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Solution

The fourth proportional to 408,181.98, 563,336.70 and 247,125.78 is: 341,061.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,181.98 : 563,336.70 = 247,125.78 : x
  2. Step 2: Convert to fraction form
    408,181.98/563,336.70 = 247,125.78/x
  3. Step 3: Cross multiply
    408,181.98x = 563,336.70 × 247,125.78
  4. Step 4: Simplify right side
    408,181.98x = 139,215,021,390.13
  5. Step 5: Solve for x
    x = 139,215,021,390.13/408,181.98
  6. Step 6: Final answer
    x = 341,061.16

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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.