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Finding the Fourth Proportional to 275,535.78, 380,239.18 and 154,677.30

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Solution

The fourth proportional to 275,535.78, 380,239.18 and 154,677.30 is: 213,454.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,535.78 : 380,239.18 = 154,677.30 : x
  2. Step 2: Convert to fraction form
    275,535.78/380,239.18 = 154,677.30/x
  3. Step 3: Cross multiply
    275,535.78x = 380,239.18 × 154,677.30
  4. Step 4: Simplify right side
    275,535.78x = 58,814,369,716.61
  5. Step 5: Solve for x
    x = 58,814,369,716.61/275,535.78
  6. Step 6: Final answer
    x = 213,454.56

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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.