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Finding the Fourth Proportional to 238,138.89, 357,208.32 and 71,926.89

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Solution

The fourth proportional to 238,138.89, 357,208.32 and 71,926.89 is: 107,890.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,138.89 : 357,208.32 = 71,926.89 : x
  2. Step 2: Convert to fraction form
    238,138.89/357,208.32 = 71,926.89/x
  3. Step 3: Cross multiply
    238,138.89x = 357,208.32 × 71,926.89
  4. Step 4: Simplify right side
    238,138.89x = 25,692,883,539.72
  5. Step 5: Solve for x
    x = 25,692,883,539.72/238,138.89
  6. Step 6: Final answer
    x = 107,890.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.