Home / 207,945.60-311,764.80-83,222.40

Finding the Fourth Proportional to 207,945.60, 311,764.80 and 83,222.40

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Solution

The fourth proportional to 207,945.60, 311,764.80 and 83,222.40 is: 124,772.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,945.60 : 311,764.80 = 83,222.40 : x
  2. Step 2: Convert to fraction form
    207,945.60/311,764.80 = 83,222.40/x
  3. Step 3: Cross multiply
    207,945.60x = 311,764.80 × 83,222.40
  4. Step 4: Simplify right side
    207,945.60x = 25,945,814,891.52
  5. Step 5: Solve for x
    x = 25,945,814,891.52/207,945.60
  6. Step 6: Final answer
    x = 124,772.13

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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.