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Finding the Fourth Proportional to 437,218.40, 656,119.20 and 200,439.20

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Solution

The fourth proportional to 437,218.40, 656,119.20 and 200,439.20 is: 300,792.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,218.40 : 656,119.20 = 200,439.20 : x
  2. Step 2: Convert to fraction form
    437,218.40/656,119.20 = 200,439.20/x
  3. Step 3: Cross multiply
    437,218.40x = 656,119.20 × 200,439.20
  4. Step 4: Simplify right side
    437,218.40x = 131,512,007,552.64
  5. Step 5: Solve for x
    x = 131,512,007,552.64/437,218.40
  6. Step 6: Final answer
    x = 300,792.48

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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.