Home / 259,725.54-389,827.80-131,731.66

Finding the Fourth Proportional to 259,725.54, 389,827.80 and 131,731.66

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Solution

The fourth proportional to 259,725.54, 389,827.80 and 131,731.66 is: 197,718.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,725.54 : 389,827.80 = 131,731.66 : x
  2. Step 2: Convert to fraction form
    259,725.54/389,827.80 = 131,731.66/x
  3. Step 3: Cross multiply
    259,725.54x = 389,827.80 × 131,731.66
  4. Step 4: Simplify right side
    259,725.54x = 51,352,663,208.15
  5. Step 5: Solve for x
    x = 51,352,663,208.15/259,725.54
  6. Step 6: Final answer
    x = 197,718.96

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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.