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Finding the Fourth Proportional to 445,404.80, 667,669.80 and 220,799.90

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Solution

The fourth proportional to 445,404.80, 667,669.80 and 220,799.90 is: 330,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,404.80 : 667,669.80 = 220,799.90 : x
  2. Step 2: Convert to fraction form
    445,404.80/667,669.80 = 220,799.90/x
  3. Step 3: Cross multiply
    445,404.80x = 667,669.80 × 220,799.90
  4. Step 4: Simplify right side
    445,404.80x = 147,421,425,073.02
  5. Step 5: Solve for x
    x = 147,421,425,073.02/445,404.80
  6. Step 6: Final answer
    x = 330,983.02

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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.