Home / 320,243.46-479,976.78-235,215.20

Finding the Fourth Proportional to 320,243.46, 479,976.78 and 235,215.20

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Solution

The fourth proportional to 320,243.46, 479,976.78 and 235,215.20 is: 352,537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,243.46 : 479,976.78 = 235,215.20 : x
  2. Step 2: Convert to fraction form
    320,243.46/479,976.78 = 235,215.20/x
  3. Step 3: Cross multiply
    320,243.46x = 479,976.78 × 235,215.20
  4. Step 4: Simplify right side
    320,243.46x = 112,897,836,385.06
  5. Step 5: Solve for x
    x = 112,897,836,385.06/320,243.46
  6. Step 6: Final answer
    x = 352,537.53

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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.