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Finding the Fourth Proportional to 321,845.60, 482,768.40 and 197,256.80

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Solution

The fourth proportional to 321,845.60, 482,768.40 and 197,256.80 is: 295,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,845.60 : 482,768.40 = 197,256.80 : x
  2. Step 2: Convert to fraction form
    321,845.60/482,768.40 = 197,256.80/x
  3. Step 3: Cross multiply
    321,845.60x = 482,768.40 × 197,256.80
  4. Step 4: Simplify right side
    321,845.60x = 95,229,349,725.12
  5. Step 5: Solve for x
    x = 95,229,349,725.12/321,845.60
  6. Step 6: Final answer
    x = 295,885.20

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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.