Home / 259,809.12-389,725.02-82,329.22

Finding the Fourth Proportional to 259,809.12, 389,725.02 and 82,329.22

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Solution

The fourth proportional to 259,809.12, 389,725.02 and 82,329.22 is: 123,497.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,809.12 : 389,725.02 = 82,329.22 : x
  2. Step 2: Convert to fraction form
    259,809.12/389,725.02 = 82,329.22/x
  3. Step 3: Cross multiply
    259,809.12x = 389,725.02 × 82,329.22
  4. Step 4: Simplify right side
    259,809.12x = 32,085,756,911.08
  5. Step 5: Solve for x
    x = 32,085,756,911.08/259,809.12
  6. Step 6: Final answer
    x = 123,497.42

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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.