Home / 217,717.40-300,433.42-122,205.64

Finding the Fourth Proportional to 217,717.40, 300,433.42 and 122,205.64

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Solution

The fourth proportional to 217,717.40, 300,433.42 and 122,205.64 is: 168,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,717.40 : 300,433.42 = 122,205.64 : x
  2. Step 2: Convert to fraction form
    217,717.40/300,433.42 = 122,205.64/x
  3. Step 3: Cross multiply
    217,717.40x = 300,433.42 × 122,205.64
  4. Step 4: Simplify right side
    217,717.40x = 36,714,657,311.89
  5. Step 5: Solve for x
    x = 36,714,657,311.89/217,717.40
  6. Step 6: Final answer
    x = 168,634.47

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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.