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Finding the Fourth Proportional to 449,017.44, 619,642.80 and 247,812

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Solution

The fourth proportional to 449,017.44, 619,642.80 and 247,812 is: 341,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,017.44 : 619,642.80 = 247,812 : x
  2. Step 2: Convert to fraction form
    449,017.44/619,642.80 = 247,812/x
  3. Step 3: Cross multiply
    449,017.44x = 619,642.80 × 247,812
  4. Step 4: Simplify right side
    449,017.44x = 153,554,921,553.60
  5. Step 5: Solve for x
    x = 153,554,921,553.60/449,017.44
  6. Step 6: Final answer
    x = 341,979.86

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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.