Home / 217,717.82-300,430.05-122,205.86

Finding the Fourth Proportional to 217,717.82, 300,430.05 and 122,205.86

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Solution

The fourth proportional to 217,717.82, 300,430.05 and 122,205.86 is: 168,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,717.82 : 300,430.05 = 122,205.86 : x
  2. Step 2: Convert to fraction form
    217,717.82/300,430.05 = 122,205.86/x
  3. Step 3: Cross multiply
    217,717.82x = 300,430.05 × 122,205.86
  4. Step 4: Simplify right side
    217,717.82x = 36,714,312,630.09
  5. Step 5: Solve for x
    x = 36,714,312,630.09/217,717.82
  6. Step 6: Final answer
    x = 168,632.56

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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.