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Finding the Fourth Proportional to 321,426.45, 482,100.80 and 84,788.19

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Solution

The fourth proportional to 321,426.45, 482,100.80 and 84,788.19 is: 127,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,426.45 : 482,100.80 = 84,788.19 : x
  2. Step 2: Convert to fraction form
    321,426.45/482,100.80 = 84,788.19/x
  3. Step 3: Cross multiply
    321,426.45x = 482,100.80 × 84,788.19
  4. Step 4: Simplify right side
    321,426.45x = 40,876,453,805.61
  5. Step 5: Solve for x
    x = 40,876,453,805.61/321,426.45
  6. Step 6: Final answer
    x = 127,172.03

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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.