Home / 378,584.28-522,474.30-217,446.12

Finding the Fourth Proportional to 378,584.28, 522,474.30 and 217,446.12

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Solution

The fourth proportional to 378,584.28, 522,474.30 and 217,446.12 is: 300,091.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,584.28 : 522,474.30 = 217,446.12 : x
  2. Step 2: Convert to fraction form
    378,584.28/522,474.30 = 217,446.12/x
  3. Step 3: Cross multiply
    378,584.28x = 522,474.30 × 217,446.12
  4. Step 4: Simplify right side
    378,584.28x = 113,610,009,334.72
  5. Step 5: Solve for x
    x = 113,610,009,334.72/378,584.28
  6. Step 6: Final answer
    x = 300,091.72

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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.