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Finding the Fourth Proportional to 394,139.18, 591,401.39 and 244,339.40

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Solution

The fourth proportional to 394,139.18, 591,401.39 and 244,339.40 is: 366,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,139.18 : 591,401.39 = 244,339.40 : x
  2. Step 2: Convert to fraction form
    394,139.18/591,401.39 = 244,339.40/x
  3. Step 3: Cross multiply
    394,139.18x = 591,401.39 × 244,339.40
  4. Step 4: Simplify right side
    394,139.18x = 144,502,661,048.57
  5. Step 5: Solve for x
    x = 144,502,661,048.57/394,139.18
  6. Step 6: Final answer
    x = 366,628.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.