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Finding the Fourth Proportional to 395,044.38, 545,157.15 and 213,752.31

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Solution

The fourth proportional to 395,044.38, 545,157.15 and 213,752.31 is: 294,975.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,044.38 : 545,157.15 = 213,752.31 : x
  2. Step 2: Convert to fraction form
    395,044.38/545,157.15 = 213,752.31/x
  3. Step 3: Cross multiply
    395,044.38x = 545,157.15 × 213,752.31
  4. Step 4: Simplify right side
    395,044.38x = 116,528,600,125.52
  5. Step 5: Solve for x
    x = 116,528,600,125.52/395,044.38
  6. Step 6: Final answer
    x = 294,975.97

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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.