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Finding the Fourth Proportional to 438,571.53, 605,061.99 and 275,158.80

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Solution

The fourth proportional to 438,571.53, 605,061.99 and 275,158.80 is: 379,614.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,571.53 : 605,061.99 = 275,158.80 : x
  2. Step 2: Convert to fraction form
    438,571.53/605,061.99 = 275,158.80/x
  3. Step 3: Cross multiply
    438,571.53x = 605,061.99 × 275,158.80
  4. Step 4: Simplify right side
    438,571.53x = 166,488,131,094.01
  5. Step 5: Solve for x
    x = 166,488,131,094.01/438,571.53
  6. Step 6: Final answer
    x = 379,614.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.