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Finding the Fourth Proportional to 445,043.40, 667,557.76 and 108,086.80

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Solution

The fourth proportional to 445,043.40, 667,557.76 and 108,086.80 is: 162,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,043.40 : 667,557.76 = 108,086.80 : x
  2. Step 2: Convert to fraction form
    445,043.40/667,557.76 = 108,086.80/x
  3. Step 3: Cross multiply
    445,043.40x = 667,557.76 × 108,086.80
  4. Step 4: Simplify right side
    445,043.40x = 72,154,182,093.57
  5. Step 5: Solve for x
    x = 72,154,182,093.57/445,043.40
  6. Step 6: Final answer
    x = 162,128.42

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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.