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Finding the Fourth Proportional to 229,137.96, 316,224.90 and 128,542.44

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Solution

The fourth proportional to 229,137.96, 316,224.90 and 128,542.44 is: 177,396.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,137.96 : 316,224.90 = 128,542.44 : x
  2. Step 2: Convert to fraction form
    229,137.96/316,224.90 = 128,542.44/x
  3. Step 3: Cross multiply
    229,137.96x = 316,224.90 × 128,542.44
  4. Step 4: Simplify right side
    229,137.96x = 40,648,320,234.76
  5. Step 5: Solve for x
    x = 40,648,320,234.76/229,137.96
  6. Step 6: Final answer
    x = 177,396.71

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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.