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Finding the Fourth Proportional to 217,175.48, 299,600.78 and 136,647.39

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Solution

The fourth proportional to 217,175.48, 299,600.78 and 136,647.39 is: 188,509.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,175.48 : 299,600.78 = 136,647.39 : x
  2. Step 2: Convert to fraction form
    217,175.48/299,600.78 = 136,647.39/x
  3. Step 3: Cross multiply
    217,175.48x = 299,600.78 × 136,647.39
  4. Step 4: Simplify right side
    217,175.48x = 40,939,663,945.73
  5. Step 5: Solve for x
    x = 40,939,663,945.73/217,175.48
  6. Step 6: Final answer
    x = 188,509.61

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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.