Home / 320,072.64-479,944.56-187,212.48

Finding the Fourth Proportional to 320,072.64, 479,944.56 and 187,212.48

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Solution

The fourth proportional to 320,072.64, 479,944.56 and 187,212.48 is: 280,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,072.64 : 479,944.56 = 187,212.48 : x
  2. Step 2: Convert to fraction form
    320,072.64/479,944.56 = 187,212.48/x
  3. Step 3: Cross multiply
    320,072.64x = 479,944.56 × 187,212.48
  4. Step 4: Simplify right side
    320,072.64x = 89,851,611,340.11
  5. Step 5: Solve for x
    x = 89,851,611,340.11/320,072.64
  6. Step 6: Final answer
    x = 280,722.56

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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.