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Finding the Fourth Proportional to 272,361.40, 408,542.10 and 202,377.40

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Solution

The fourth proportional to 272,361.40, 408,542.10 and 202,377.40 is: 303,566.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,361.40 : 408,542.10 = 202,377.40 : x
  2. Step 2: Convert to fraction form
    272,361.40/408,542.10 = 202,377.40/x
  3. Step 3: Cross multiply
    272,361.40x = 408,542.10 × 202,377.40
  4. Step 4: Simplify right side
    272,361.40x = 82,679,687,988.54
  5. Step 5: Solve for x
    x = 82,679,687,988.54/272,361.40
  6. Step 6: Final answer
    x = 303,566.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.