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Finding the Fourth Proportional to 386,212.25, 579,221.44 and 183,683.39

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Solution

The fourth proportional to 386,212.25, 579,221.44 and 183,683.39 is: 275,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,212.25 : 579,221.44 = 183,683.39 : x
  2. Step 2: Convert to fraction form
    386,212.25/579,221.44 = 183,683.39/x
  3. Step 3: Cross multiply
    386,212.25x = 579,221.44 × 183,683.39
  4. Step 4: Simplify right side
    386,212.25x = 106,393,354,304.57
  5. Step 5: Solve for x
    x = 106,393,354,304.57/386,212.25
  6. Step 6: Final answer
    x = 275,478.97

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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.