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Finding the Fourth Proportional to 192,650.40, 288,889.20 and 87,415.20

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Solution

The fourth proportional to 192,650.40, 288,889.20 and 87,415.20 is: 131,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,650.40 : 288,889.20 = 87,415.20 : x
  2. Step 2: Convert to fraction form
    192,650.40/288,889.20 = 87,415.20/x
  3. Step 3: Cross multiply
    192,650.40x = 288,889.20 × 87,415.20
  4. Step 4: Simplify right side
    192,650.40x = 25,253,307,195.84
  5. Step 5: Solve for x
    x = 25,253,307,195.84/192,650.40
  6. Step 6: Final answer
    x = 131,083.60

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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.