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Finding the Fourth Proportional to 351,545.28, 485,131.32 and 190,399.92

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Solution

The fourth proportional to 351,545.28, 485,131.32 and 190,399.92 is: 262,751.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,545.28 : 485,131.32 = 190,399.92 : x
  2. Step 2: Convert to fraction form
    351,545.28/485,131.32 = 190,399.92/x
  3. Step 3: Cross multiply
    351,545.28x = 485,131.32 × 190,399.92
  4. Step 4: Simplify right side
    351,545.28x = 92,368,964,517.49
  5. Step 5: Solve for x
    x = 92,368,964,517.49/351,545.28
  6. Step 6: Final answer
    x = 262,751.26

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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.