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Finding the Fourth Proportional to 378,212.10, 566,540.55 and 260,016.90

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Solution

The fourth proportional to 378,212.10, 566,540.55 and 260,016.90 is: 389,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,212.10 : 566,540.55 = 260,016.90 : x
  2. Step 2: Convert to fraction form
    378,212.10/566,540.55 = 260,016.90/x
  3. Step 3: Cross multiply
    378,212.10x = 566,540.55 × 260,016.90
  4. Step 4: Simplify right side
    378,212.10x = 147,310,117,535.30
  5. Step 5: Solve for x
    x = 147,310,117,535.30/378,212.10
  6. Step 6: Final answer
    x = 389,490.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.