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Finding the Fourth Proportional to 502,495.70, 693,163.27 and 308,768.81

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Solution

The fourth proportional to 502,495.70, 693,163.27 and 308,768.81 is: 425,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,495.70 : 693,163.27 = 308,768.81 : x
  2. Step 2: Convert to fraction form
    502,495.70/693,163.27 = 308,768.81/x
  3. Step 3: Cross multiply
    502,495.70x = 693,163.27 × 308,768.81
  4. Step 4: Simplify right side
    502,495.70x = 214,027,198,832.80
  5. Step 5: Solve for x
    x = 214,027,198,832.80/502,495.70
  6. Step 6: Final answer
    x = 425,928.42

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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.