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Finding the Fourth Proportional to 445,123.56, 667,218.78 and 164,461.80

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Solution

The fourth proportional to 445,123.56, 667,218.78 and 164,461.80 is: 246,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,123.56 : 667,218.78 = 164,461.80 : x
  2. Step 2: Convert to fraction form
    445,123.56/667,218.78 = 164,461.80/x
  3. Step 3: Cross multiply
    445,123.56x = 667,218.78 × 164,461.80
  4. Step 4: Simplify right side
    445,123.56x = 109,732,001,552.60
  5. Step 5: Solve for x
    x = 109,732,001,552.60/445,123.56
  6. Step 6: Final answer
    x = 246,520.32

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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.