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Finding the Fourth Proportional to 321,495.48, 443,688.84 and 178,283.43

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Solution

The fourth proportional to 321,495.48, 443,688.84 and 178,283.43 is: 246,045.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,495.48 : 443,688.84 = 178,283.43 : x
  2. Step 2: Convert to fraction form
    321,495.48/443,688.84 = 178,283.43/x
  3. Step 3: Cross multiply
    321,495.48x = 443,688.84 × 178,283.43
  4. Step 4: Simplify right side
    321,495.48x = 79,102,368,247.92
  5. Step 5: Solve for x
    x = 79,102,368,247.92/321,495.48
  6. Step 6: Final answer
    x = 246,045.04

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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.