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Finding the Fourth Proportional to 449,145, 619,820.10 and 247,942.44

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Solution

The fourth proportional to 449,145, 619,820.10 and 247,942.44 is: 342,160.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,145 : 619,820.10 = 247,942.44 : x
  2. Step 2: Convert to fraction form
    449,145/619,820.10 = 247,942.44/x
  3. Step 3: Cross multiply
    449,145x = 619,820.10 × 247,942.44
  4. Step 4: Simplify right side
    449,145x = 153,679,707,955.04
  5. Step 5: Solve for x
    x = 153,679,707,955.04/449,145
  6. Step 6: Final answer
    x = 342,160.57

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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.