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Finding the Fourth Proportional to 351,602.56, 527,345.52 and 126,919.90

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Solution

The fourth proportional to 351,602.56, 527,345.52 and 126,919.90 is: 190,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,602.56 : 527,345.52 = 126,919.90 : x
  2. Step 2: Convert to fraction form
    351,602.56/527,345.52 = 126,919.90/x
  3. Step 3: Cross multiply
    351,602.56x = 527,345.52 × 126,919.90
  4. Step 4: Simplify right side
    351,602.56x = 66,930,640,663.85
  5. Step 5: Solve for x
    x = 66,930,640,663.85/351,602.56
  6. Step 6: Final answer
    x = 190,358.80

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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.