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Finding the Fourth Proportional to 438,906.81, 605,740.71 and 247,932.51

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Solution

The fourth proportional to 438,906.81, 605,740.71 and 247,932.51 is: 342,174.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,906.81 : 605,740.71 = 247,932.51 : x
  2. Step 2: Convert to fraction form
    438,906.81/605,740.71 = 247,932.51/x
  3. Step 3: Cross multiply
    438,906.81x = 605,740.71 × 247,932.51
  4. Step 4: Simplify right side
    438,906.81x = 150,182,814,639.48
  5. Step 5: Solve for x
    x = 150,182,814,639.48/438,906.81
  6. Step 6: Final answer
    x = 342,174.72

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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.