Home / 217,489.17-300,134.43-120,707.64

Finding the Fourth Proportional to 217,489.17, 300,134.43 and 120,707.64

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Solution

The fourth proportional to 217,489.17, 300,134.43 and 120,707.64 is: 166,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,489.17 : 300,134.43 = 120,707.64 : x
  2. Step 2: Convert to fraction form
    217,489.17/300,134.43 = 120,707.64/x
  3. Step 3: Cross multiply
    217,489.17x = 300,134.43 × 120,707.64
  4. Step 4: Simplify right side
    217,489.17x = 36,228,518,728.05
  5. Step 5: Solve for x
    x = 36,228,518,728.05/217,489.17
  6. Step 6: Final answer
    x = 166,576.20

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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.