Home / 207,233.20-311,080.20-128,436.40

Finding the Fourth Proportional to 207,233.20, 311,080.20 and 128,436.40

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Solution

The fourth proportional to 207,233.20, 311,080.20 and 128,436.40 is: 192,797.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,233.20 : 311,080.20 = 128,436.40 : x
  2. Step 2: Convert to fraction form
    207,233.20/311,080.20 = 128,436.40/x
  3. Step 3: Cross multiply
    207,233.20x = 311,080.20 × 128,436.40
  4. Step 4: Simplify right side
    207,233.20x = 39,954,020,999.28
  5. Step 5: Solve for x
    x = 39,954,020,999.28/207,233.20
  6. Step 6: Final answer
    x = 192,797.39

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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.