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Finding the Fourth Proportional to 171,998.88, 257,999.76 and 47,346.72

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Solution

The fourth proportional to 171,998.88, 257,999.76 and 47,346.72 is: 71,020.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,998.88 : 257,999.76 = 47,346.72 : x
  2. Step 2: Convert to fraction form
    171,998.88/257,999.76 = 47,346.72/x
  3. Step 3: Cross multiply
    171,998.88x = 257,999.76 × 47,346.72
  4. Step 4: Simplify right side
    171,998.88x = 12,215,442,396.79
  5. Step 5: Solve for x
    x = 12,215,442,396.79/171,998.88
  6. Step 6: Final answer
    x = 71,020.48

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1.5x scale

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.