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Finding the Fourth Proportional to 449,146, 619,821.48 and 247,943.44

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Solution

The fourth proportional to 449,146, 619,821.48 and 247,943.44 is: 342,161.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,146 : 619,821.48 = 247,943.44 : x
  2. Step 2: Convert to fraction form
    449,146/619,821.48 = 247,943.44/x
  3. Step 3: Cross multiply
    449,146x = 619,821.48 × 247,943.44
  4. Step 4: Simplify right side
    449,146x = 153,680,669,937.09
  5. Step 5: Solve for x
    x = 153,680,669,937.09/449,146
  6. Step 6: Final answer
    x = 342,161.95

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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.