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Finding the Fourth Proportional to 447,697.20, 672,064.20 and 270,404.40

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Solution

The fourth proportional to 447,697.20, 672,064.20 and 270,404.40 is: 405,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,697.20 : 672,064.20 = 270,404.40 : x
  2. Step 2: Convert to fraction form
    447,697.20/672,064.20 = 270,404.40/x
  3. Step 3: Cross multiply
    447,697.20x = 672,064.20 × 270,404.40
  4. Step 4: Simplify right side
    447,697.20x = 181,729,116,762.48
  5. Step 5: Solve for x
    x = 181,729,116,762.48/447,697.20
  6. Step 6: Final answer
    x = 405,919.71

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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.