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Finding the Fourth Proportional to 395,553.28, 545,866.15 and 214,265.21

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Solution

The fourth proportional to 395,553.28, 545,866.15 and 214,265.21 is: 295,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,553.28 : 545,866.15 = 214,265.21 : x
  2. Step 2: Convert to fraction form
    395,553.28/545,866.15 = 214,265.21/x
  3. Step 3: Cross multiply
    395,553.28x = 545,866.15 × 214,265.21
  4. Step 4: Simplify right side
    395,553.28x = 116,960,125,261.64
  5. Step 5: Solve for x
    x = 116,960,125,261.64/395,553.28
  6. Step 6: Final answer
    x = 295,687.41

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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.