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Finding the Fourth Proportional to 207,517.70, 311,054.81 and 148,173.45

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Solution

The fourth proportional to 207,517.70, 311,054.81 and 148,173.45 is: 222,101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,517.70 : 311,054.81 = 148,173.45 : x
  2. Step 2: Convert to fraction form
    207,517.70/311,054.81 = 148,173.45/x
  3. Step 3: Cross multiply
    207,517.70x = 311,054.81 × 148,173.45
  4. Step 4: Simplify right side
    207,517.70x = 46,090,063,595.93
  5. Step 5: Solve for x
    x = 46,090,063,595.93/207,517.70
  6. Step 6: Final answer
    x = 222,101.85

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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.