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Finding the Fourth Proportional to 171,992.88, 257,990.76 and 47,340.72

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Solution

The fourth proportional to 171,992.88, 257,990.76 and 47,340.72 is: 71,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,992.88 : 257,990.76 = 47,340.72 : x
  2. Step 2: Convert to fraction form
    171,992.88/257,990.76 = 47,340.72/x
  3. Step 3: Cross multiply
    171,992.88x = 257,990.76 × 47,340.72
  4. Step 4: Simplify right side
    171,992.88x = 12,213,468,331.75
  5. Step 5: Solve for x
    x = 12,213,468,331.75/171,992.88
  6. Step 6: Final answer
    x = 71,011.48

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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.