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Finding the Fourth Proportional to 351,924.32, 485,649.60 and 198,960.20

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Solution

The fourth proportional to 351,924.32, 485,649.60 and 198,960.20 is: 274,561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,924.32 : 485,649.60 = 198,960.20 : x
  2. Step 2: Convert to fraction form
    351,924.32/485,649.60 = 198,960.20/x
  3. Step 3: Cross multiply
    351,924.32x = 485,649.60 × 198,960.20
  4. Step 4: Simplify right side
    351,924.32x = 96,624,941,545.92
  5. Step 5: Solve for x
    x = 96,624,941,545.92/351,924.32
  6. Step 6: Final answer
    x = 274,561.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.