Home / 259,031.25-388,568.88-72,042.75

Finding the Fourth Proportional to 259,031.25, 388,568.88 and 72,042.75

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Solution

The fourth proportional to 259,031.25, 388,568.88 and 72,042.75 is: 108,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,031.25 : 388,568.88 = 72,042.75 : x
  2. Step 2: Convert to fraction form
    259,031.25/388,568.88 = 72,042.75/x
  3. Step 3: Cross multiply
    259,031.25x = 388,568.88 × 72,042.75
  4. Step 4: Simplify right side
    259,031.25x = 27,993,570,679.62
  5. Step 5: Solve for x
    x = 27,993,570,679.62/259,031.25
  6. Step 6: Final answer
    x = 108,070.25

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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.