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Finding the Fourth Proportional to 399,971.58, 551,954.88 and 238,796.34

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Solution

The fourth proportional to 399,971.58, 551,954.88 and 238,796.34 is: 329,535.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,971.58 : 551,954.88 = 238,796.34 : x
  2. Step 2: Convert to fraction form
    399,971.58/551,954.88 = 238,796.34/x
  3. Step 3: Cross multiply
    399,971.58x = 551,954.88 × 238,796.34
  4. Step 4: Simplify right side
    399,971.58x = 131,804,805,189.14
  5. Step 5: Solve for x
    x = 131,804,805,189.14/399,971.58
  6. Step 6: Final answer
    x = 329,535.43

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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.