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Finding the Fourth Proportional to 270,390.78, 373,171.73 and 157,213.53

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Solution

The fourth proportional to 270,390.78, 373,171.73 and 157,213.53 is: 216,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,390.78 : 373,171.73 = 157,213.53 : x
  2. Step 2: Convert to fraction form
    270,390.78/373,171.73 = 157,213.53/x
  3. Step 3: Cross multiply
    270,390.78x = 373,171.73 × 157,213.53
  4. Step 4: Simplify right side
    270,390.78x = 58,667,644,183.44
  5. Step 5: Solve for x
    x = 58,667,644,183.44/270,390.78
  6. Step 6: Final answer
    x = 216,973.54

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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.