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Finding the Fourth Proportional to 399,121.80, 598,682.70 and 250,308.60

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Solution

The fourth proportional to 399,121.80, 598,682.70 and 250,308.60 is: 375,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,121.80 : 598,682.70 = 250,308.60 : x
  2. Step 2: Convert to fraction form
    399,121.80/598,682.70 = 250,308.60/x
  3. Step 3: Cross multiply
    399,121.80x = 598,682.70 × 250,308.60
  4. Step 4: Simplify right side
    399,121.80x = 149,855,428,481.22
  5. Step 5: Solve for x
    x = 149,855,428,481.22/399,121.80
  6. Step 6: Final answer
    x = 375,462.90

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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.