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Finding the Fourth Proportional to 400,173.21, 600,197.17 and 133,931.61

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Solution

The fourth proportional to 400,173.21, 600,197.17 and 133,931.61 is: 200,876.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,173.21 : 600,197.17 = 133,931.61 : x
  2. Step 2: Convert to fraction form
    400,173.21/600,197.17 = 133,931.61/x
  3. Step 3: Cross multiply
    400,173.21x = 600,197.17 × 133,931.61
  4. Step 4: Simplify right side
    400,173.21x = 80,385,373,295.54
  5. Step 5: Solve for x
    x = 80,385,373,295.54/400,173.21
  6. Step 6: Final answer
    x = 200,876.45

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1.5x scale

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.