Home / 217,306.72-299,868.18-120,515.68

Finding the Fourth Proportional to 217,306.72, 299,868.18 and 120,515.68

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Solution

The fourth proportional to 217,306.72, 299,868.18 and 120,515.68 is: 166,303.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,306.72 : 299,868.18 = 120,515.68 : x
  2. Step 2: Convert to fraction form
    217,306.72/299,868.18 = 120,515.68/x
  3. Step 3: Cross multiply
    217,306.72x = 299,868.18 × 120,515.68
  4. Step 4: Simplify right side
    217,306.72x = 36,138,817,623.06
  5. Step 5: Solve for x
    x = 36,138,817,623.06/217,306.72
  6. Step 6: Final answer
    x = 166,303.27

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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.