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Finding the Fourth Proportional to 376,428.79, 519,472.61 and 206,673.85

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Solution

The fourth proportional to 376,428.79, 519,472.61 and 206,673.85 is: 285,210.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,428.79 : 519,472.61 = 206,673.85 : x
  2. Step 2: Convert to fraction form
    376,428.79/519,472.61 = 206,673.85/x
  3. Step 3: Cross multiply
    376,428.79x = 519,472.61 × 206,673.85
  4. Step 4: Simplify right side
    376,428.79x = 107,361,404,278.25
  5. Step 5: Solve for x
    x = 107,361,404,278.25/376,428.79
  6. Step 6: Final answer
    x = 285,210.40

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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.