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Finding the Fourth Proportional to 447,234.80, 669,685.80 and 353,145.20

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Solution

The fourth proportional to 447,234.80, 669,685.80 and 353,145.20 is: 528,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,234.80 : 669,685.80 = 353,145.20 : x
  2. Step 2: Convert to fraction form
    447,234.80/669,685.80 = 353,145.20/x
  3. Step 3: Cross multiply
    447,234.80x = 669,685.80 × 353,145.20
  4. Step 4: Simplify right side
    447,234.80x = 236,496,325,778.16
  5. Step 5: Solve for x
    x = 236,496,325,778.16/447,234.80
  6. Step 6: Final answer
    x = 528,796.79

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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.