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Finding the Fourth Proportional to 248,772, 343,305.60 and 135,595.20

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Solution

The fourth proportional to 248,772, 343,305.60 and 135,595.20 is: 187,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,772 : 343,305.60 = 135,595.20 : x
  2. Step 2: Convert to fraction form
    248,772/343,305.60 = 135,595.20/x
  3. Step 3: Cross multiply
    248,772x = 343,305.60 × 135,595.20
  4. Step 4: Simplify right side
    248,772x = 46,550,591,493.12
  5. Step 5: Solve for x
    x = 46,550,591,493.12/248,772
  6. Step 6: Final answer
    x = 187,121.51

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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.