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Finding the Fourth Proportional to 381,272.94, 571,723.11 and 156,573.27

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Solution

The fourth proportional to 381,272.94, 571,723.11 and 156,573.27 is: 234,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,272.94 : 571,723.11 = 156,573.27 : x
  2. Step 2: Convert to fraction form
    381,272.94/571,723.11 = 156,573.27/x
  3. Step 3: Cross multiply
    381,272.94x = 571,723.11 × 156,573.27
  4. Step 4: Simplify right side
    381,272.94x = 89,516,556,867.27
  5. Step 5: Solve for x
    x = 89,516,556,867.27/381,272.94
  6. Step 6: Final answer
    x = 234,783.40

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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.