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Finding the Fourth Proportional to 192,021.80, 288,032.70 and 188,911.40

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Solution

The fourth proportional to 192,021.80, 288,032.70 and 188,911.40 is: 283,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,021.80 : 288,032.70 = 188,911.40 : x
  2. Step 2: Convert to fraction form
    192,021.80/288,032.70 = 188,911.40/x
  3. Step 3: Cross multiply
    192,021.80x = 288,032.70 × 188,911.40
  4. Step 4: Simplify right side
    192,021.80x = 54,412,660,602.78
  5. Step 5: Solve for x
    x = 54,412,660,602.78/192,021.80
  6. Step 6: Final answer
    x = 283,367.10

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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.