Home / 259,546.90-389,291.55-212,718.10

Finding the Fourth Proportional to 259,546.90, 389,291.55 and 212,718.10

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Solution

The fourth proportional to 259,546.90, 389,291.55 and 212,718.10 is: 319,053.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,546.90 : 389,291.55 = 212,718.10 : x
  2. Step 2: Convert to fraction form
    259,546.90/389,291.55 = 212,718.10/x
  3. Step 3: Cross multiply
    259,546.90x = 389,291.55 × 212,718.10
  4. Step 4: Simplify right side
    259,546.90x = 82,809,358,862.06
  5. Step 5: Solve for x
    x = 82,809,358,862.06/259,546.90
  6. Step 6: Final answer
    x = 319,053.55

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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.