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Finding the Fourth Proportional to 321,788.76, 444,068.44 and 178,549.80

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Solution

The fourth proportional to 321,788.76, 444,068.44 and 178,549.80 is: 246,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,788.76 : 444,068.44 = 178,549.80 : x
  2. Step 2: Convert to fraction form
    321,788.76/444,068.44 = 178,549.80/x
  3. Step 3: Cross multiply
    321,788.76x = 444,068.44 × 178,549.80
  4. Step 4: Simplify right side
    321,788.76x = 79,288,331,148.31
  5. Step 5: Solve for x
    x = 79,288,331,148.31/321,788.76
  6. Step 6: Final answer
    x = 246,398.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.