Home / 321,136.32-443,193.12-177,909.60

Finding the Fourth Proportional to 321,136.32, 443,193.12 and 177,909.60

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Solution

The fourth proportional to 321,136.32, 443,193.12 and 177,909.60 is: 245,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,136.32 : 443,193.12 = 177,909.60 : x
  2. Step 2: Convert to fraction form
    321,136.32/443,193.12 = 177,909.60/x
  3. Step 3: Cross multiply
    321,136.32x = 443,193.12 × 177,909.60
  4. Step 4: Simplify right side
    321,136.32x = 78,848,310,701.95
  5. Step 5: Solve for x
    x = 78,848,310,701.95/321,136.32
  6. Step 6: Final answer
    x = 245,529.10

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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.