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Finding the Fourth Proportional to 321,282.99, 443,359.37 and 178,056.36

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Solution

The fourth proportional to 321,282.99, 443,359.37 and 178,056.36 is: 245,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,282.99 : 443,359.37 = 178,056.36 : x
  2. Step 2: Convert to fraction form
    321,282.99/443,359.37 = 178,056.36/x
  3. Step 3: Cross multiply
    321,282.99x = 443,359.37 × 178,056.36
  4. Step 4: Simplify right side
    321,282.99x = 78,942,956,039.23
  5. Step 5: Solve for x
    x = 78,942,956,039.23/321,282.99
  6. Step 6: Final answer
    x = 245,711.60

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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.