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Finding the Fourth Proportional to 400,487.57, 600,821.34 and 134,241.28

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Solution

The fourth proportional to 400,487.57, 600,821.34 and 134,241.28 is: 201,392.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,487.57 : 600,821.34 = 134,241.28 : x
  2. Step 2: Convert to fraction form
    400,487.57/600,821.34 = 134,241.28/x
  3. Step 3: Cross multiply
    400,487.57x = 600,821.34 × 134,241.28
  4. Step 4: Simplify right side
    400,487.57x = 80,655,025,732.92
  5. Step 5: Solve for x
    x = 80,655,025,732.92/400,487.57
  6. Step 6: Final answer
    x = 201,392.08

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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.