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Finding the Fourth Proportional to 321,495.72, 482,196.20 and 84,855.03

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Solution

The fourth proportional to 321,495.72, 482,196.20 and 84,855.03 is: 127,270.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,495.72 : 482,196.20 = 84,855.03 : x
  2. Step 2: Convert to fraction form
    321,495.72/482,196.20 = 84,855.03/x
  3. Step 3: Cross multiply
    321,495.72x = 482,196.20 × 84,855.03
  4. Step 4: Simplify right side
    321,495.72x = 40,916,772,592.61
  5. Step 5: Solve for x
    x = 40,916,772,592.61/321,495.72
  6. Step 6: Final answer
    x = 127,270.04

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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.