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Finding the Fourth Proportional to 395,371.38, 545,612.79 and 214,083.43

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Solution

The fourth proportional to 395,371.38, 545,612.79 and 214,083.43 is: 295,435.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,371.38 : 545,612.79 = 214,083.43 : x
  2. Step 2: Convert to fraction form
    395,371.38/545,612.79 = 214,083.43/x
  3. Step 3: Cross multiply
    395,371.38x = 545,612.79 × 214,083.43
  4. Step 4: Simplify right side
    395,371.38x = 116,806,657,535.07
  5. Step 5: Solve for x
    x = 116,806,657,535.07/395,371.38
  6. Step 6: Final answer
    x = 295,435.29

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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.