Home / 321,426.88-443,528.08-178,185.60

Finding the Fourth Proportional to 321,426.88, 443,528.08 and 178,185.60

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Solution

The fourth proportional to 321,426.88, 443,528.08 and 178,185.60 is: 245,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,426.88 : 443,528.08 = 178,185.60 : x
  2. Step 2: Convert to fraction form
    321,426.88/443,528.08 = 178,185.60/x
  3. Step 3: Cross multiply
    321,426.88x = 443,528.08 × 178,185.60
  4. Step 4: Simplify right side
    321,426.88x = 79,030,317,051.65
  5. Step 5: Solve for x
    x = 79,030,317,051.65/321,426.88
  6. Step 6: Final answer
    x = 245,873.39

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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.