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Finding the Fourth Proportional to 275,718.96, 380,474.64 and 154,857.12

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Solution

The fourth proportional to 275,718.96, 380,474.64 and 154,857.12 is: 213,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,718.96 : 380,474.64 = 154,857.12 : x
  2. Step 2: Convert to fraction form
    275,718.96/380,474.64 = 154,857.12/x
  3. Step 3: Cross multiply
    275,718.96x = 380,474.64 × 154,857.12
  4. Step 4: Simplify right side
    275,718.96x = 58,919,206,983.44
  5. Step 5: Solve for x
    x = 58,919,206,983.44/275,718.96
  6. Step 6: Final answer
    x = 213,692.98

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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.