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Finding the Fourth Proportional to 239,740, 359,627.28 and 91,996

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Solution

The fourth proportional to 239,740, 359,627.28 and 91,996 is: 138,000.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,740 : 359,627.28 = 91,996 : x
  2. Step 2: Convert to fraction form
    239,740/359,627.28 = 91,996/x
  3. Step 3: Cross multiply
    239,740x = 359,627.28 × 91,996
  4. Step 4: Simplify right side
    239,740x = 33,084,271,250.88
  5. Step 5: Solve for x
    x = 33,084,271,250.88/239,740
  6. Step 6: Final answer
    x = 138,000.63

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