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Finding the Fourth Proportional to 447,400.84, 670,869.60 and 131,816.20

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Solution

The fourth proportional to 447,400.84, 670,869.60 and 131,816.20 is: 197,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,400.84 : 670,869.60 = 131,816.20 : x
  2. Step 2: Convert to fraction form
    447,400.84/670,869.60 = 131,816.20/x
  3. Step 3: Cross multiply
    447,400.84x = 670,869.60 × 131,816.20
  4. Step 4: Simplify right side
    447,400.84x = 88,431,481,367.52
  5. Step 5: Solve for x
    x = 88,431,481,367.52/447,400.84
  6. Step 6: Final answer
    x = 197,656.05

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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.