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Finding the Fourth Proportional to 438,896.81, 605,726.91 and 247,922.51

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Solution

The fourth proportional to 438,896.81, 605,726.91 and 247,922.51 is: 342,160.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,896.81 : 605,726.91 = 247,922.51 : x
  2. Step 2: Convert to fraction form
    438,896.81/605,726.91 = 247,922.51/x
  3. Step 3: Cross multiply
    438,896.81x = 605,726.91 × 247,922.51
  4. Step 4: Simplify right side
    438,896.81x = 150,173,332,873.11
  5. Step 5: Solve for x
    x = 150,173,332,873.11/438,896.81
  6. Step 6: Final answer
    x = 342,160.91

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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.