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Finding the Fourth Proportional to 432,855.20, 649,282.80 and 273,422.90

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Solution

The fourth proportional to 432,855.20, 649,282.80 and 273,422.90 is: 410,134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,855.20 : 649,282.80 = 273,422.90 : x
  2. Step 2: Convert to fraction form
    432,855.20/649,282.80 = 273,422.90/x
  3. Step 3: Cross multiply
    432,855.20x = 649,282.80 × 273,422.90
  4. Step 4: Simplify right side
    432,855.20x = 177,528,786,096.12
  5. Step 5: Solve for x
    x = 177,528,786,096.12/432,855.20
  6. Step 6: Final answer
    x = 410,134.35

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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.