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Finding the Fourth Proportional to 234,978.40, 352,388.46 and 85,187.32

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Solution

The fourth proportional to 234,978.40, 352,388.46 and 85,187.32 is: 127,752.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,978.40 : 352,388.46 = 85,187.32 : x
  2. Step 2: Convert to fraction form
    234,978.40/352,388.46 = 85,187.32/x
  3. Step 3: Cross multiply
    234,978.40x = 352,388.46 × 85,187.32
  4. Step 4: Simplify right side
    234,978.40x = 30,019,028,506.33
  5. Step 5: Solve for x
    x = 30,019,028,506.33/234,978.40
  6. Step 6: Final answer
    x = 127,752.29

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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.