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Finding the Fourth Proportional to 399,327.75, 550,799.03 and 238,058.37

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Solution

The fourth proportional to 399,327.75, 550,799.03 and 238,058.37 is: 328,357.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,327.75 : 550,799.03 = 238,058.37 : x
  2. Step 2: Convert to fraction form
    399,327.75/550,799.03 = 238,058.37/x
  3. Step 3: Cross multiply
    399,327.75x = 550,799.03 × 238,058.37
  4. Step 4: Simplify right side
    399,327.75x = 131,122,316,651.56
  5. Step 5: Solve for x
    x = 131,122,316,651.56/399,327.75
  6. Step 6: Final answer
    x = 328,357.64

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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.