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Finding the Fourth Proportional to 311,161.40, 429,405.78 and 175,168.88

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Solution

The fourth proportional to 311,161.40, 429,405.78 and 175,168.88 is: 241,734.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,161.40 : 429,405.78 = 175,168.88 : x
  2. Step 2: Convert to fraction form
    311,161.40/429,405.78 = 175,168.88/x
  3. Step 3: Cross multiply
    311,161.40x = 429,405.78 × 175,168.88
  4. Step 4: Simplify right side
    311,161.40x = 75,218,529,548.13
  5. Step 5: Solve for x
    x = 75,218,529,548.13/311,161.40
  6. Step 6: Final answer
    x = 241,734.77

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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.