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Finding the Fourth Proportional to 321,558.90, 443,752.47 and 178,332.18

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Solution

The fourth proportional to 321,558.90, 443,752.47 and 178,332.18 is: 246,099.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,558.90 : 443,752.47 = 178,332.18 : x
  2. Step 2: Convert to fraction form
    321,558.90/443,752.47 = 178,332.18/x
  3. Step 3: Cross multiply
    321,558.90x = 443,752.47 × 178,332.18
  4. Step 4: Simplify right side
    321,558.90x = 79,135,345,355.48
  5. Step 5: Solve for x
    x = 79,135,345,355.48/321,558.90
  6. Step 6: Final answer
    x = 246,099.07

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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.