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Finding the Fourth Proportional to 274,574.87, 412,153.45 and 243,188.69

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Solution

The fourth proportional to 274,574.87, 412,153.45 and 243,188.69 is: 365,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,574.87 : 412,153.45 = 243,188.69 : x
  2. Step 2: Convert to fraction form
    274,574.87/412,153.45 = 243,188.69/x
  3. Step 3: Cross multiply
    274,574.87x = 412,153.45 × 243,188.69
  4. Step 4: Simplify right side
    274,574.87x = 100,231,057,584.48
  5. Step 5: Solve for x
    x = 100,231,057,584.48/274,574.87
  6. Step 6: Final answer
    x = 365,040.90

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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.