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Finding the Fourth Proportional to 449,253.52, 674,040.72 and 192,978.42

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Solution

The fourth proportional to 449,253.52, 674,040.72 and 192,978.42 is: 289,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,253.52 : 674,040.72 = 192,978.42 : x
  2. Step 2: Convert to fraction form
    449,253.52/674,040.72 = 192,978.42/x
  3. Step 3: Cross multiply
    449,253.52x = 674,040.72 × 192,978.42
  4. Step 4: Simplify right side
    449,253.52x = 130,075,313,161.26
  5. Step 5: Solve for x
    x = 130,075,313,161.26/449,253.52
  6. Step 6: Final answer
    x = 289,536.55

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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.