Home / 217,717.21-300,433.16-122,205.45

Finding the Fourth Proportional to 217,717.21, 300,433.16 and 122,205.45

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Solution

The fourth proportional to 217,717.21, 300,433.16 and 122,205.45 is: 168,634.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,717.21 : 300,433.16 = 122,205.45 : x
  2. Step 2: Convert to fraction form
    217,717.21/300,433.16 = 122,205.45/x
  3. Step 3: Cross multiply
    217,717.21x = 300,433.16 × 122,205.45
  4. Step 4: Simplify right side
    217,717.21x = 36,714,569,359.97
  5. Step 5: Solve for x
    x = 36,714,569,359.97/217,717.21
  6. Step 6: Final answer
    x = 168,634.21

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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.