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Finding the Fourth Proportional to 356,663.25, 534,617.82 and 131,879.34

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Solution

The fourth proportional to 356,663.25, 534,617.82 and 131,879.34 is: 197,679.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,663.25 : 534,617.82 = 131,879.34 : x
  2. Step 2: Convert to fraction form
    356,663.25/534,617.82 = 131,879.34/x
  3. Step 3: Cross multiply
    356,663.25x = 534,617.82 × 131,879.34
  4. Step 4: Simplify right side
    356,663.25x = 70,505,045,253.84
  5. Step 5: Solve for x
    x = 70,505,045,253.84/356,663.25
  6. Step 6: Final answer
    x = 197,679.59

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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.