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Finding the Fourth Proportional to 236,538.60, 354,905.10 and 86,850.60

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Solution

The fourth proportional to 236,538.60, 354,905.10 and 86,850.60 is: 130,311.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,538.60 : 354,905.10 = 86,850.60 : x
  2. Step 2: Convert to fraction form
    236,538.60/354,905.10 = 86,850.60/x
  3. Step 3: Cross multiply
    236,538.60x = 354,905.10 × 86,850.60
  4. Step 4: Simplify right side
    236,538.60x = 30,823,720,878.06
  5. Step 5: Solve for x
    x = 30,823,720,878.06/236,538.60
  6. Step 6: Final answer
    x = 130,311.59

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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.