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Finding the Fourth Proportional to 491,173.56, 677,858.86 and 276,300.80

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Solution

The fourth proportional to 491,173.56, 677,858.86 and 276,300.80 is: 381,317.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,173.56 : 677,858.86 = 276,300.80 : x
  2. Step 2: Convert to fraction form
    491,173.56/677,858.86 = 276,300.80/x
  3. Step 3: Cross multiply
    491,173.56x = 677,858.86 × 276,300.80
  4. Step 4: Simplify right side
    491,173.56x = 187,292,945,305.09
  5. Step 5: Solve for x
    x = 187,292,945,305.09/491,173.56
  6. Step 6: Final answer
    x = 381,317.24

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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.