Home / 311,637.56-429,988.42-196,778.14

Finding the Fourth Proportional to 311,637.56, 429,988.42 and 196,778.14

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Solution

The fourth proportional to 311,637.56, 429,988.42 and 196,778.14 is: 271,508.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,637.56 : 429,988.42 = 196,778.14 : x
  2. Step 2: Convert to fraction form
    311,637.56/429,988.42 = 196,778.14/x
  3. Step 3: Cross multiply
    311,637.56x = 429,988.42 × 196,778.14
  4. Step 4: Simplify right side
    311,637.56x = 84,612,321,509.14
  5. Step 5: Solve for x
    x = 84,612,321,509.14/311,637.56
  6. Step 6: Final answer
    x = 271,508.74

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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.