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Finding the Fourth Proportional to 438,568.53, 605,057.85 and 275,155.80

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Solution

The fourth proportional to 438,568.53, 605,057.85 and 275,155.80 is: 379,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,568.53 : 605,057.85 = 275,155.80 : x
  2. Step 2: Convert to fraction form
    438,568.53/605,057.85 = 275,155.80/x
  3. Step 3: Cross multiply
    438,568.53x = 605,057.85 × 275,155.80
  4. Step 4: Simplify right side
    438,568.53x = 166,485,176,763.03
  5. Step 5: Solve for x
    x = 166,485,176,763.03/438,568.53
  6. Step 6: Final answer
    x = 379,610.40

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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.