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Finding the Fourth Proportional to 321,989.40, 444,356.82 and 178,751.70

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Solution

The fourth proportional to 321,989.40, 444,356.82 and 178,751.70 is: 246,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,989.40 : 444,356.82 = 178,751.70 : x
  2. Step 2: Convert to fraction form
    321,989.40/444,356.82 = 178,751.70/x
  3. Step 3: Cross multiply
    321,989.40x = 444,356.82 × 178,751.70
  4. Step 4: Simplify right side
    321,989.40x = 79,429,536,981.59
  5. Step 5: Solve for x
    x = 79,429,536,981.59/321,989.40
  6. Step 6: Final answer
    x = 246,683.70

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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.