Home / 309,725.22-426,968.39-218,920.98

Finding the Fourth Proportional to 309,725.22, 426,968.39 and 218,920.98

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Solution

The fourth proportional to 309,725.22, 426,968.39 and 218,920.98 is: 301,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,725.22 : 426,968.39 = 218,920.98 : x
  2. Step 2: Convert to fraction form
    309,725.22/426,968.39 = 218,920.98/x
  3. Step 3: Cross multiply
    309,725.22x = 426,968.39 × 218,920.98
  4. Step 4: Simplify right side
    309,725.22x = 93,472,338,367.82
  5. Step 5: Solve for x
    x = 93,472,338,367.82/309,725.22
  6. Step 6: Final answer
    x = 301,791.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.