Home / 380,768.11-571,180.86-128,049.32

Finding the Fourth Proportional to 380,768.11, 571,180.86 and 128,049.32

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Solution

The fourth proportional to 380,768.11, 571,180.86 and 128,049.32 is: 192,083.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,768.11 : 571,180.86 = 128,049.32 : x
  2. Step 2: Convert to fraction form
    380,768.11/571,180.86 = 128,049.32/x
  3. Step 3: Cross multiply
    380,768.11x = 571,180.86 × 128,049.32
  4. Step 4: Simplify right side
    380,768.11x = 73,139,322,147.97
  5. Step 5: Solve for x
    x = 73,139,322,147.97/380,768.11
  6. Step 6: Final answer
    x = 192,083.63

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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.