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Finding the Fourth Proportional to 275,505.60, 380,236.11 and 153,025.50

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Solution

The fourth proportional to 275,505.60, 380,236.11 and 153,025.50 is: 211,196.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,505.60 : 380,236.11 = 153,025.50 : x
  2. Step 2: Convert to fraction form
    275,505.60/380,236.11 = 153,025.50/x
  3. Step 3: Cross multiply
    275,505.60x = 380,236.11 × 153,025.50
  4. Step 4: Simplify right side
    275,505.60x = 58,185,820,850.81
  5. Step 5: Solve for x
    x = 58,185,820,850.81/275,505.60
  6. Step 6: Final answer
    x = 211,196.51

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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.