Home / 259,815.60-389,723.40-126,627.30

Finding the Fourth Proportional to 259,815.60, 389,723.40 and 126,627.30

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Solution

The fourth proportional to 259,815.60, 389,723.40 and 126,627.30 is: 189,940.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,815.60 : 389,723.40 = 126,627.30 : x
  2. Step 2: Convert to fraction form
    259,815.60/389,723.40 = 126,627.30/x
  3. Step 3: Cross multiply
    259,815.60x = 389,723.40 × 126,627.30
  4. Step 4: Simplify right side
    259,815.60x = 49,349,621,888.82
  5. Step 5: Solve for x
    x = 49,349,621,888.82/259,815.60
  6. Step 6: Final answer
    x = 189,940.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.