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Finding the Fourth Proportional to 321,613.53, 443,795.32 and 178,370.49

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Solution

The fourth proportional to 321,613.53, 443,795.32 and 178,370.49 is: 246,133.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,613.53 : 443,795.32 = 178,370.49 : x
  2. Step 2: Convert to fraction form
    321,613.53/443,795.32 = 178,370.49/x
  3. Step 3: Cross multiply
    321,613.53x = 443,795.32 × 178,370.49
  4. Step 4: Simplify right side
    321,613.53x = 79,159,988,688.11
  5. Step 5: Solve for x
    x = 79,159,988,688.11/321,613.53
  6. Step 6: Final answer
    x = 246,133.89

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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.