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Finding the Fourth Proportional to 491,131.80, 677,755.08 and 276,271.80

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Solution

The fourth proportional to 491,131.80, 677,755.08 and 276,271.80 is: 381,251.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,131.80 : 677,755.08 = 276,271.80 : x
  2. Step 2: Convert to fraction form
    491,131.80/677,755.08 = 276,271.80/x
  3. Step 3: Cross multiply
    491,131.80x = 677,755.08 × 276,271.80
  4. Step 4: Simplify right side
    491,131.80x = 187,244,615,910.74
  5. Step 5: Solve for x
    x = 187,244,615,910.74/491,131.80
  6. Step 6: Final answer
    x = 381,251.26

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1.5x scale

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.