Home / 217,717.37-300,433.38-122,205.61

Finding the Fourth Proportional to 217,717.37, 300,433.38 and 122,205.61

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Solution

The fourth proportional to 217,717.37, 300,433.38 and 122,205.61 is: 168,634.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,717.37 : 300,433.38 = 122,205.61 : x
  2. Step 2: Convert to fraction form
    217,717.37/300,433.38 = 122,205.61/x
  3. Step 3: Cross multiply
    217,717.37x = 300,433.38 × 122,205.61
  4. Step 4: Simplify right side
    217,717.37x = 36,714,642,354.07
  5. Step 5: Solve for x
    x = 36,714,642,354.07/217,717.37
  6. Step 6: Final answer
    x = 168,634.42

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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.