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Finding the Fourth Proportional to 394,567, 544,504.38 and 215,719

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Solution

The fourth proportional to 394,567, 544,504.38 and 215,719 is: 297,693.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,567 : 544,504.38 = 215,719 : x
  2. Step 2: Convert to fraction form
    394,567/544,504.38 = 215,719/x
  3. Step 3: Cross multiply
    394,567x = 544,504.38 × 215,719
  4. Step 4: Simplify right side
    394,567x = 117,459,940,349.22
  5. Step 5: Solve for x
    x = 117,459,940,349.22/394,567
  6. Step 6: Final answer
    x = 297,693.27

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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.