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Finding the Fourth Proportional to 613,103.73, 919,718.31 and 234,343.28

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Solution

The fourth proportional to 613,103.73, 919,718.31 and 234,343.28 is: 351,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,103.73 : 919,718.31 = 234,343.28 : x
  2. Step 2: Convert to fraction form
    613,103.73/919,718.31 = 234,343.28/x
  3. Step 3: Cross multiply
    613,103.73x = 919,718.31 × 234,343.28
  4. Step 4: Simplify right side
    613,103.73x = 215,529,800,842.87
  5. Step 5: Solve for x
    x = 215,529,800,842.87/613,103.73
  6. Step 6: Final answer
    x = 351,538.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.