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Finding the Fourth Proportional to 275,358.70, 380,382.15 and 212,504.32

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Solution

The fourth proportional to 275,358.70, 380,382.15 and 212,504.32 is: 293,554.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,358.70 : 380,382.15 = 212,504.32 : x
  2. Step 2: Convert to fraction form
    275,358.70/380,382.15 = 212,504.32/x
  3. Step 3: Cross multiply
    275,358.70x = 380,382.15 × 212,504.32
  4. Step 4: Simplify right side
    275,358.70x = 80,832,850,125.89
  5. Step 5: Solve for x
    x = 80,832,850,125.89/275,358.70
  6. Step 6: Final answer
    x = 293,554.73

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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.