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Finding the Fourth Proportional to 439,047.78, 605,884.50 and 248,061.12

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Solution

The fourth proportional to 439,047.78, 605,884.50 and 248,061.12 is: 342,323.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,047.78 : 605,884.50 = 248,061.12 : x
  2. Step 2: Convert to fraction form
    439,047.78/605,884.50 = 248,061.12/x
  3. Step 3: Cross multiply
    439,047.78x = 605,884.50 × 248,061.12
  4. Step 4: Simplify right side
    439,047.78x = 150,296,387,660.64
  5. Step 5: Solve for x
    x = 150,296,387,660.64/439,047.78
  6. Step 6: Final answer
    x = 342,323.53

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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.