Home / 321,120.84-443,146.77-177,890.16

Finding the Fourth Proportional to 321,120.84, 443,146.77 and 177,890.16

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Solution

The fourth proportional to 321,120.84, 443,146.77 and 177,890.16 is: 245,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,120.84 : 443,146.77 = 177,890.16 : x
  2. Step 2: Convert to fraction form
    321,120.84/443,146.77 = 177,890.16/x
  3. Step 3: Cross multiply
    321,120.84x = 443,146.77 × 177,890.16
  4. Step 4: Simplify right side
    321,120.84x = 78,831,450,813.50
  5. Step 5: Solve for x
    x = 78,831,450,813.50/321,120.84
  6. Step 6: Final answer
    x = 245,488.43

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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.