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Finding the Fourth Proportional to 376,727.40, 564,912.90 and 219,004.20

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Solution

The fourth proportional to 376,727.40, 564,912.90 and 219,004.20 is: 328,402.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,727.40 : 564,912.90 = 219,004.20 : x
  2. Step 2: Convert to fraction form
    376,727.40/564,912.90 = 219,004.20/x
  3. Step 3: Cross multiply
    376,727.40x = 564,912.90 × 219,004.20
  4. Step 4: Simplify right side
    376,727.40x = 123,718,297,734.18
  5. Step 5: Solve for x
    x = 123,718,297,734.18/376,727.40
  6. Step 6: Final answer
    x = 328,402.71

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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.