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Finding the Fourth Proportional to 311,639.30, 467,292.60 and 161,728.64

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Solution

The fourth proportional to 311,639.30, 467,292.60 and 161,728.64 is: 242,506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,639.30 : 467,292.60 = 161,728.64 : x
  2. Step 2: Convert to fraction form
    311,639.30/467,292.60 = 161,728.64/x
  3. Step 3: Cross multiply
    311,639.30x = 467,292.60 × 161,728.64
  4. Step 4: Simplify right side
    311,639.30x = 75,574,594,343.60
  5. Step 5: Solve for x
    x = 75,574,594,343.60/311,639.30
  6. Step 6: Final answer
    x = 242,506.63

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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.