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Finding the Fourth Proportional to 613,181, 919,823.34 and 169,949

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Solution

The fourth proportional to 613,181, 919,823.34 and 169,949 is: 254,937.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,181 : 919,823.34 = 169,949 : x
  2. Step 2: Convert to fraction form
    613,181/919,823.34 = 169,949/x
  3. Step 3: Cross multiply
    613,181x = 919,823.34 × 169,949
  4. Step 4: Simplify right side
    613,181x = 156,323,056,809.66
  5. Step 5: Solve for x
    x = 156,323,056,809.66/613,181
  6. Step 6: Final answer
    x = 254,937.87

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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.