Home / 209,398.82-288,989.10-123,358.59

Finding the Fourth Proportional to 209,398.82, 288,989.10 and 123,358.59

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Solution

The fourth proportional to 209,398.82, 288,989.10 and 123,358.59 is: 170,245.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,398.82 : 288,989.10 = 123,358.59 : x
  2. Step 2: Convert to fraction form
    209,398.82/288,989.10 = 123,358.59/x
  3. Step 3: Cross multiply
    209,398.82x = 288,989.10 × 123,358.59
  4. Step 4: Simplify right side
    209,398.82x = 35,649,287,901.37
  5. Step 5: Solve for x
    x = 35,649,287,901.37/209,398.82
  6. Step 6: Final answer
    x = 170,245.89

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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.