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Finding the Fourth Proportional to 394,706, 544,707.24 and 215,858

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Solution

The fourth proportional to 394,706, 544,707.24 and 215,858 is: 297,891.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,706 : 544,707.24 = 215,858 : x
  2. Step 2: Convert to fraction form
    394,706/544,707.24 = 215,858/x
  3. Step 3: Cross multiply
    394,706x = 544,707.24 × 215,858
  4. Step 4: Simplify right side
    394,706x = 117,579,415,411.92
  5. Step 5: Solve for x
    x = 117,579,415,411.92/394,706
  6. Step 6: Final answer
    x = 297,891.13

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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.