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Finding the Fourth Proportional to 238,988.40, 329,559.48 and 158,388

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Solution

The fourth proportional to 238,988.40, 329,559.48 and 158,388 is: 218,413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,988.40 : 329,559.48 = 158,388 : x
  2. Step 2: Convert to fraction form
    238,988.40/329,559.48 = 158,388/x
  3. Step 3: Cross multiply
    238,988.40x = 329,559.48 × 158,388
  4. Step 4: Simplify right side
    238,988.40x = 52,198,266,918.24
  5. Step 5: Solve for x
    x = 52,198,266,918.24/238,988.40
  6. Step 6: Final answer
    x = 218,413.39

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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.