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Finding the Fourth Proportional to 376,459.79, 519,515.40 and 206,704.85

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Solution

The fourth proportional to 376,459.79, 519,515.40 and 206,704.85 is: 285,253.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,459.79 : 519,515.40 = 206,704.85 : x
  2. Step 2: Convert to fraction form
    376,459.79/519,515.40 = 206,704.85/x
  3. Step 3: Cross multiply
    376,459.79x = 519,515.40 × 206,704.85
  4. Step 4: Simplify right side
    376,459.79x = 107,386,352,829.69
  5. Step 5: Solve for x
    x = 107,386,352,829.69/376,459.79
  6. Step 6: Final answer
    x = 285,253.18

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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.