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Finding the Fourth Proportional to 275,401.60, 380,022.96 and 154,517.68

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Solution

The fourth proportional to 275,401.60, 380,022.96 and 154,517.68 is: 213,216.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,401.60 : 380,022.96 = 154,517.68 : x
  2. Step 2: Convert to fraction form
    275,401.60/380,022.96 = 154,517.68/x
  3. Step 3: Cross multiply
    275,401.60x = 380,022.96 × 154,517.68
  4. Step 4: Simplify right side
    275,401.60x = 58,720,266,125.93
  5. Step 5: Solve for x
    x = 58,720,266,125.93/275,401.60
  6. Step 6: Final answer
    x = 213,216.87

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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.