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Finding the Fourth Proportional to 171,519, 257,232 and 71,658.30

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Solution

The fourth proportional to 171,519, 257,232 and 71,658.30 is: 107,468.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,519 : 257,232 = 71,658.30 : x
  2. Step 2: Convert to fraction form
    171,519/257,232 = 71,658.30/x
  3. Step 3: Cross multiply
    171,519x = 257,232 × 71,658.30
  4. Step 4: Simplify right side
    171,519x = 18,432,807,825.60
  5. Step 5: Solve for x
    x = 18,432,807,825.60/171,519
  6. Step 6: Final answer
    x = 107,468.02

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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.