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Finding the Fourth Proportional to 321,282.90, 443,372.97 and 178,045.32

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Solution

The fourth proportional to 321,282.90, 443,372.97 and 178,045.32 is: 245,703.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,282.90 : 443,372.97 = 178,045.32 : x
  2. Step 2: Convert to fraction form
    321,282.90/443,372.97 = 178,045.32/x
  3. Step 3: Cross multiply
    321,282.90x = 443,372.97 × 178,045.32
  4. Step 4: Simplify right side
    321,282.90x = 78,940,482,323.00
  5. Step 5: Solve for x
    x = 78,940,482,323.00/321,282.90
  6. Step 6: Final answer
    x = 245,703.96

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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.