Home / 207,811.40-311,717.10-67,584.20

Finding the Fourth Proportional to 207,811.40, 311,717.10 and 67,584.20

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Solution

The fourth proportional to 207,811.40, 311,717.10 and 67,584.20 is: 101,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,811.40 : 311,717.10 = 67,584.20 : x
  2. Step 2: Convert to fraction form
    207,811.40/311,717.10 = 67,584.20/x
  3. Step 3: Cross multiply
    207,811.40x = 311,717.10 × 67,584.20
  4. Step 4: Simplify right side
    207,811.40x = 21,067,150,829.82
  5. Step 5: Solve for x
    x = 21,067,150,829.82/207,811.40
  6. Step 6: Final answer
    x = 101,376.30

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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.