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Finding the Fourth Proportional to 395,093.76, 545,225.23 and 213,801.72

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Solution

The fourth proportional to 395,093.76, 545,225.23 and 213,801.72 is: 295,044.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,093.76 : 545,225.23 = 213,801.72 : x
  2. Step 2: Convert to fraction form
    395,093.76/545,225.23 = 213,801.72/x
  3. Step 3: Cross multiply
    395,093.76x = 545,225.23 × 213,801.72
  4. Step 4: Simplify right side
    395,093.76x = 116,570,091,961.40
  5. Step 5: Solve for x
    x = 116,570,091,961.40/395,093.76
  6. Step 6: Final answer
    x = 295,044.12

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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.