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Finding the Fourth Proportional to 192,040.60, 288,060.90 and 172,406.20

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Solution

The fourth proportional to 192,040.60, 288,060.90 and 172,406.20 is: 258,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,040.60 : 288,060.90 = 172,406.20 : x
  2. Step 2: Convert to fraction form
    192,040.60/288,060.90 = 172,406.20/x
  3. Step 3: Cross multiply
    192,040.60x = 288,060.90 × 172,406.20
  4. Step 4: Simplify right side
    192,040.60x = 49,663,485,137.58
  5. Step 5: Solve for x
    x = 49,663,485,137.58/192,040.60
  6. Step 6: Final answer
    x = 258,609.30

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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.