Home / 217,717.61-300,433.72-122,205.86

Finding the Fourth Proportional to 217,717.61, 300,433.72 and 122,205.86

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Solution

The fourth proportional to 217,717.61, 300,433.72 and 122,205.86 is: 168,634.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,717.61 : 300,433.72 = 122,205.86 : x
  2. Step 2: Convert to fraction form
    217,717.61/300,433.72 = 122,205.86/x
  3. Step 3: Cross multiply
    217,717.61x = 300,433.72 × 122,205.86
  4. Step 4: Simplify right side
    217,717.61x = 36,714,759,012.40
  5. Step 5: Solve for x
    x = 36,714,759,012.40/217,717.61
  6. Step 6: Final answer
    x = 168,634.77

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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.