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Finding the Fourth Proportional to 321,262.36, 443,340.86 and 178,022.29

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Solution

The fourth proportional to 321,262.36, 443,340.86 and 178,022.29 is: 245,670.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,262.36 : 443,340.86 = 178,022.29 : x
  2. Step 2: Convert to fraction form
    321,262.36/443,340.86 = 178,022.29/x
  3. Step 3: Cross multiply
    321,262.36x = 443,340.86 × 178,022.29
  4. Step 4: Simplify right side
    321,262.36x = 78,924,555,147.77
  5. Step 5: Solve for x
    x = 78,924,555,147.77/321,262.36
  6. Step 6: Final answer
    x = 245,670.10

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1.5x scale

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.