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Finding the Fourth Proportional to 618,286.80, 927,492.84 and 213,426.24

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Solution

The fourth proportional to 618,286.80, 927,492.84 and 213,426.24 is: 320,160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,286.80 : 927,492.84 = 213,426.24 : x
  2. Step 2: Convert to fraction form
    618,286.80/927,492.84 = 213,426.24/x
  3. Step 3: Cross multiply
    618,286.80x = 927,492.84 × 213,426.24
  4. Step 4: Simplify right side
    618,286.80x = 197,951,309,468.12
  5. Step 5: Solve for x
    x = 197,951,309,468.12/618,286.80
  6. Step 6: Final answer
    x = 320,160.98

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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.