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Finding the Fourth Proportional to 192,970, 289,446.04 and 52,728.20

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Solution

The fourth proportional to 192,970, 289,446.04 and 52,728.20 is: 79,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,970 : 289,446.04 = 52,728.20 : x
  2. Step 2: Convert to fraction form
    192,970/289,446.04 = 52,728.20/x
  3. Step 3: Cross multiply
    192,970x = 289,446.04 × 52,728.20
  4. Step 4: Simplify right side
    192,970x = 15,261,968,686.33
  5. Step 5: Solve for x
    x = 15,261,968,686.33/192,970
  6. Step 6: Final answer
    x = 79,089.85

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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.