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Finding the Fourth Proportional to 438,986, 605,826.60 and 247,994.48

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Solution

The fourth proportional to 438,986, 605,826.60 and 247,994.48 is: 342,247.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,986 : 605,826.60 = 247,994.48 : x
  2. Step 2: Convert to fraction form
    438,986/605,826.60 = 247,994.48/x
  3. Step 3: Cross multiply
    438,986x = 605,826.60 × 247,994.48
  4. Step 4: Simplify right side
    438,986x = 150,241,652,637.17
  5. Step 5: Solve for x
    x = 150,241,652,637.17/438,986
  6. Step 6: Final answer
    x = 342,247.03

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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.