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Finding the Fourth Proportional to 481,377.62, 664,445.13 and 311,623.22

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Solution

The fourth proportional to 481,377.62, 664,445.13 and 311,623.22 is: 430,133.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,377.62 : 664,445.13 = 311,623.22 : x
  2. Step 2: Convert to fraction form
    481,377.62/664,445.13 = 311,623.22/x
  3. Step 3: Cross multiply
    481,377.62x = 664,445.13 × 311,623.22
  4. Step 4: Simplify right side
    481,377.62x = 207,056,531,416.44
  5. Step 5: Solve for x
    x = 207,056,531,416.44/481,377.62
  6. Step 6: Final answer
    x = 430,133.27

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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.