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Finding the Fourth Proportional to 207,902.23, 311,858.21 and 67,671.79

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Solution

The fourth proportional to 207,902.23, 311,858.21 and 67,671.79 is: 101,509.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,902.23 : 311,858.21 = 67,671.79 : x
  2. Step 2: Convert to fraction form
    207,902.23/311,858.21 = 67,671.79/x
  3. Step 3: Cross multiply
    207,902.23x = 311,858.21 × 67,671.79
  4. Step 4: Simplify right side
    207,902.23x = 21,104,003,296.90
  5. Step 5: Solve for x
    x = 21,104,003,296.90/207,902.23
  6. Step 6: Final answer
    x = 101,509.27

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1.5x scale

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.