Home / 399,922.40-551,899.49-238,791.53

Finding the Fourth Proportional to 399,922.40, 551,899.49 and 238,791.53

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Solution

The fourth proportional to 399,922.40, 551,899.49 and 238,791.53 is: 329,536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,922.40 : 551,899.49 = 238,791.53 : x
  2. Step 2: Convert to fraction form
    399,922.40/551,899.49 = 238,791.53/x
  3. Step 3: Cross multiply
    399,922.40x = 551,899.49 × 238,791.53
  4. Step 4: Simplify right side
    399,922.40x = 131,788,919,669.87
  5. Step 5: Solve for x
    x = 131,788,919,669.87/399,922.40
  6. Step 6: Final answer
    x = 329,536.23

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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.