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Finding the Fourth Proportional to 438,551.38, 605,218.29 and 247,571.38

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Solution

The fourth proportional to 438,551.38, 605,218.29 and 247,571.38 is: 341,658.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,551.38 : 605,218.29 = 247,571.38 : x
  2. Step 2: Convert to fraction form
    438,551.38/605,218.29 = 247,571.38/x
  3. Step 3: Cross multiply
    438,551.38x = 605,218.29 × 247,571.38
  4. Step 4: Simplify right side
    438,551.38x = 149,834,727,256.54
  5. Step 5: Solve for x
    x = 149,834,727,256.54/438,551.38
  6. Step 6: Final answer
    x = 341,658.32

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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.