Home / 399,629.29-551,481.96-218,337.32

Finding the Fourth Proportional to 399,629.29, 551,481.96 and 218,337.32

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Solution

The fourth proportional to 399,629.29, 551,481.96 and 218,337.32 is: 301,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,629.29 : 551,481.96 = 218,337.32 : x
  2. Step 2: Convert to fraction form
    399,629.29/551,481.96 = 218,337.32/x
  3. Step 3: Cross multiply
    399,629.29x = 551,481.96 × 218,337.32
  4. Step 4: Simplify right side
    399,629.29x = 120,409,093,174.75
  5. Step 5: Solve for x
    x = 120,409,093,174.75/399,629.29
  6. Step 6: Final answer
    x = 301,301.97

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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.