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Finding the Fourth Proportional to 192,695.80, 289,043.70 and 52,454.20

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Solution

The fourth proportional to 192,695.80, 289,043.70 and 52,454.20 is: 78,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,695.80 : 289,043.70 = 52,454.20 : x
  2. Step 2: Convert to fraction form
    192,695.80/289,043.70 = 52,454.20/x
  3. Step 3: Cross multiply
    192,695.80x = 289,043.70 × 52,454.20
  4. Step 4: Simplify right side
    192,695.80x = 15,161,556,048.54
  5. Step 5: Solve for x
    x = 15,161,556,048.54/192,695.80
  6. Step 6: Final answer
    x = 78,681.30

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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.