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Finding the Fourth Proportional to 321,720.20, 482,568.17 and 97,074.64

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Solution

The fourth proportional to 321,720.20, 482,568.17 and 97,074.64 is: 145,608.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,720.20 : 482,568.17 = 97,074.64 : x
  2. Step 2: Convert to fraction form
    321,720.20/482,568.17 = 97,074.64/x
  3. Step 3: Cross multiply
    321,720.20x = 482,568.17 × 97,074.64
  4. Step 4: Simplify right side
    321,720.20x = 46,845,131,496.05
  5. Step 5: Solve for x
    x = 46,845,131,496.05/321,720.20
  6. Step 6: Final answer
    x = 145,608.30

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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.