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Finding the Fourth Proportional to 321,629.73, 443,777.70 and 185,655.03

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Solution

The fourth proportional to 321,629.73, 443,777.70 and 185,655.03 is: 256,162.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,629.73 : 443,777.70 = 185,655.03 : x
  2. Step 2: Convert to fraction form
    321,629.73/443,777.70 = 185,655.03/x
  3. Step 3: Cross multiply
    321,629.73x = 443,777.70 × 185,655.03
  4. Step 4: Simplify right side
    321,629.73x = 82,389,562,206.83
  5. Step 5: Solve for x
    x = 82,389,562,206.83/321,629.73
  6. Step 6: Final answer
    x = 256,162.77

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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.