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Finding the Fourth Proportional to 270,236.72, 372,963.72 and 155,513.04

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Solution

The fourth proportional to 270,236.72, 372,963.72 and 155,513.04 is: 214,629.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,236.72 : 372,963.72 = 155,513.04 : x
  2. Step 2: Convert to fraction form
    270,236.72/372,963.72 = 155,513.04/x
  3. Step 3: Cross multiply
    270,236.72x = 372,963.72 × 155,513.04
  4. Step 4: Simplify right side
    270,236.72x = 58,000,721,906.91
  5. Step 5: Solve for x
    x = 58,000,721,906.91/270,236.72
  6. Step 6: Final answer
    x = 214,629.31

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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.