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Finding the Fourth Proportional to 491,170.56, 677,854.74 and 276,297.80

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Solution

The fourth proportional to 491,170.56, 677,854.74 and 276,297.80 is: 381,313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,170.56 : 677,854.74 = 276,297.80 : x
  2. Step 2: Convert to fraction form
    491,170.56/677,854.74 = 276,297.80/x
  3. Step 3: Cross multiply
    491,170.56x = 677,854.74 × 276,297.80
  4. Step 4: Simplify right side
    491,170.56x = 187,289,773,381.57
  5. Step 5: Solve for x
    x = 187,289,773,381.57/491,170.56
  6. Step 6: Final answer
    x = 381,313.11

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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.