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Finding the Fourth Proportional to 275,393.64, 380,042.16 and 154,534.64

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Solution

The fourth proportional to 275,393.64, 380,042.16 and 154,534.64 is: 213,257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,393.64 : 380,042.16 = 154,534.64 : x
  2. Step 2: Convert to fraction form
    275,393.64/380,042.16 = 154,534.64/x
  3. Step 3: Cross multiply
    275,393.64x = 380,042.16 × 154,534.64
  4. Step 4: Simplify right side
    275,393.64x = 58,729,678,380.42
  5. Step 5: Solve for x
    x = 58,729,678,380.42/275,393.64
  6. Step 6: Final answer
    x = 213,257.21

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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.