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Finding the Fourth Proportional to 311,662.05, 430,131.51 and 175,722.18

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Solution

The fourth proportional to 311,662.05, 430,131.51 and 175,722.18 is: 242,517.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,662.05 : 430,131.51 = 175,722.18 : x
  2. Step 2: Convert to fraction form
    311,662.05/430,131.51 = 175,722.18/x
  3. Step 3: Cross multiply
    311,662.05x = 430,131.51 × 175,722.18
  4. Step 4: Simplify right side
    311,662.05x = 75,583,646,623.89
  5. Step 5: Solve for x
    x = 75,583,646,623.89/311,662.05
  6. Step 6: Final answer
    x = 242,517.97

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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.