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Finding the Fourth Proportional to 228,984.01, 315,990.46 and 138,324.19

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Solution

The fourth proportional to 228,984.01, 315,990.46 and 138,324.19 is: 190,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,984.01 : 315,990.46 = 138,324.19 : x
  2. Step 2: Convert to fraction form
    228,984.01/315,990.46 = 138,324.19/x
  3. Step 3: Cross multiply
    228,984.01x = 315,990.46 × 138,324.19
  4. Step 4: Simplify right side
    228,984.01x = 43,709,123,291.44
  5. Step 5: Solve for x
    x = 43,709,123,291.44/228,984.01
  6. Step 6: Final answer
    x = 190,882.86

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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.