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Finding the Fourth Proportional to 491,165.55, 677,847.83 and 276,292.80

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Solution

The fourth proportional to 491,165.55, 677,847.83 and 276,292.80 is: 381,306.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,165.55 : 677,847.83 = 276,292.80 : x
  2. Step 2: Convert to fraction form
    491,165.55/677,847.83 = 276,292.80/x
  3. Step 3: Cross multiply
    491,165.55x = 677,847.83 × 276,292.80
  4. Step 4: Simplify right side
    491,165.55x = 187,284,473,543.16
  5. Step 5: Solve for x
    x = 187,284,473,543.16/491,165.55
  6. Step 6: Final answer
    x = 381,306.21

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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.