Home / 381,055.23-571,610.79-128,334.42

Finding the Fourth Proportional to 381,055.23, 571,610.79 and 128,334.42

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Solution

The fourth proportional to 381,055.23, 571,610.79 and 128,334.42 is: 192,511.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,055.23 : 571,610.79 = 128,334.42 : x
  2. Step 2: Convert to fraction form
    381,055.23/571,610.79 = 128,334.42/x
  3. Step 3: Cross multiply
    381,055.23x = 571,610.79 × 128,334.42
  4. Step 4: Simplify right side
    381,055.23x = 73,357,339,200.39
  5. Step 5: Solve for x
    x = 73,357,339,200.39/381,055.23
  6. Step 6: Final answer
    x = 192,511.04

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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.