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Finding the Fourth Proportional to 395,092.76, 545,223.85 and 213,800.72

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Solution

The fourth proportional to 395,092.76, 545,223.85 and 213,800.72 is: 295,042.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,092.76 : 545,223.85 = 213,800.72 : x
  2. Step 2: Convert to fraction form
    395,092.76/545,223.85 = 213,800.72/x
  3. Step 3: Cross multiply
    395,092.76x = 545,223.85 × 213,800.72
  4. Step 4: Simplify right side
    395,092.76x = 116,569,251,691.17
  5. Step 5: Solve for x
    x = 116,569,251,691.17/395,092.76
  6. Step 6: Final answer
    x = 295,042.74

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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.