Home / 311,395.22-429,757.14-190,616.31

Finding the Fourth Proportional to 311,395.22, 429,757.14 and 190,616.31

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Solution

The fourth proportional to 311,395.22, 429,757.14 and 190,616.31 is: 263,069.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,395.22 : 429,757.14 = 190,616.31 : x
  2. Step 2: Convert to fraction form
    311,395.22/429,757.14 = 190,616.31/x
  3. Step 3: Cross multiply
    311,395.22x = 429,757.14 × 190,616.31
  4. Step 4: Simplify right side
    311,395.22x = 81,918,720,222.95
  5. Step 5: Solve for x
    x = 81,918,720,222.95/311,395.22
  6. Step 6: Final answer
    x = 263,069.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.