Home / 321,621.18-443,821.59-178,368.54

Finding the Fourth Proportional to 321,621.18, 443,821.59 and 178,368.54

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Solution

The fourth proportional to 321,621.18, 443,821.59 and 178,368.54 is: 246,139.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,621.18 : 443,821.59 = 178,368.54 : x
  2. Step 2: Convert to fraction form
    321,621.18/443,821.59 = 178,368.54/x
  3. Step 3: Cross multiply
    321,621.18x = 443,821.59 × 178,368.54
  4. Step 4: Simplify right side
    321,621.18x = 79,163,809,028.78
  5. Step 5: Solve for x
    x = 79,163,809,028.78/321,621.18
  6. Step 6: Final answer
    x = 246,139.91

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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.