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Finding the Fourth Proportional to 311,131.62, 429,369.12 and 175,170.06

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Solution

The fourth proportional to 311,131.62, 429,369.12 and 175,170.06 is: 241,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,131.62 : 429,369.12 = 175,170.06 : x
  2. Step 2: Convert to fraction form
    311,131.62/429,369.12 = 175,170.06/x
  3. Step 3: Cross multiply
    311,131.62x = 429,369.12 × 175,170.06
  4. Step 4: Simplify right side
    311,131.62x = 75,212,614,512.55
  5. Step 5: Solve for x
    x = 75,212,614,512.55/311,131.62
  6. Step 6: Final answer
    x = 241,738.90

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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.