Home / 211,515.78-316,850.67-127,229.34

Finding the Fourth Proportional to 211,515.78, 316,850.67 and 127,229.34

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Solution

The fourth proportional to 211,515.78, 316,850.67 and 127,229.34 is: 190,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,515.78 : 316,850.67 = 127,229.34 : x
  2. Step 2: Convert to fraction form
    211,515.78/316,850.67 = 127,229.34/x
  3. Step 3: Cross multiply
    211,515.78x = 316,850.67 × 127,229.34
  4. Step 4: Simplify right side
    211,515.78x = 40,312,701,622.66
  5. Step 5: Solve for x
    x = 40,312,701,622.66/211,515.78
  6. Step 6: Final answer
    x = 190,589.57

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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.