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Finding the Fourth Proportional to 321,900.85, 444,243.93 and 178,660.90

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Solution

The fourth proportional to 321,900.85, 444,243.93 and 178,660.90 is: 246,563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,900.85 : 444,243.93 = 178,660.90 : x
  2. Step 2: Convert to fraction form
    321,900.85/444,243.93 = 178,660.90/x
  3. Step 3: Cross multiply
    321,900.85x = 444,243.93 × 178,660.90
  4. Step 4: Simplify right side
    321,900.85x = 79,369,020,353.34
  5. Step 5: Solve for x
    x = 79,369,020,353.34/321,900.85
  6. Step 6: Final answer
    x = 246,563.56

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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.