Home / 327,821.60-491,732.40-289,330.40

Finding the Fourth Proportional to 327,821.60, 491,732.40 and 289,330.40

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Solution

The fourth proportional to 327,821.60, 491,732.40 and 289,330.40 is: 433,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,821.60 : 491,732.40 = 289,330.40 : x
  2. Step 2: Convert to fraction form
    327,821.60/491,732.40 = 289,330.40/x
  3. Step 3: Cross multiply
    327,821.60x = 491,732.40 × 289,330.40
  4. Step 4: Simplify right side
    327,821.60x = 142,273,131,984.96
  5. Step 5: Solve for x
    x = 142,273,131,984.96/327,821.60
  6. Step 6: Final answer
    x = 433,995.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.