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Finding the Fourth Proportional to 321,795.72, 444,071.28 and 178,552.68

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Solution

The fourth proportional to 321,795.72, 444,071.28 and 178,552.68 is: 246,398.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,795.72 : 444,071.28 = 178,552.68 : x
  2. Step 2: Convert to fraction form
    321,795.72/444,071.28 = 178,552.68/x
  3. Step 3: Cross multiply
    321,795.72x = 444,071.28 × 178,552.68
  4. Step 4: Simplify right side
    321,795.72x = 79,290,117,155.03
  5. Step 5: Solve for x
    x = 79,290,117,155.03/321,795.72
  6. Step 6: Final answer
    x = 246,398.92

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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.