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Finding the Fourth Proportional to 438,989, 605,830.74 and 247,997.48

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Solution

The fourth proportional to 438,989, 605,830.74 and 247,997.48 is: 342,251.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,989 : 605,830.74 = 247,997.48 : x
  2. Step 2: Convert to fraction form
    438,989/605,830.74 = 247,997.48/x
  3. Step 3: Cross multiply
    438,989x = 605,830.74 × 247,997.48
  4. Step 4: Simplify right side
    438,989x = 150,244,496,826.54
  5. Step 5: Solve for x
    x = 150,244,496,826.54/438,989
  6. Step 6: Final answer
    x = 342,251.17

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1.5x scale

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.