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Finding the Fourth Proportional to 491,179.55, 677,826.63 and 276,319.55

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Solution

The fourth proportional to 491,179.55, 677,826.63 and 276,319.55 is: 381,320.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,179.55 : 677,826.63 = 276,319.55 : x
  2. Step 2: Convert to fraction form
    491,179.55/677,826.63 = 276,319.55/x
  3. Step 3: Cross multiply
    491,179.55x = 677,826.63 × 276,319.55
  4. Step 4: Simplify right side
    491,179.55x = 187,296,751,074.18
  5. Step 5: Solve for x
    x = 187,296,751,074.18/491,179.55
  6. Step 6: Final answer
    x = 381,320.34

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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.