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Finding the Fourth Proportional to 216,682.53, 299,020.17 and 121,189.15

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Solution

The fourth proportional to 216,682.53, 299,020.17 and 121,189.15 is: 167,240.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,682.53 : 299,020.17 = 121,189.15 : x
  2. Step 2: Convert to fraction form
    216,682.53/299,020.17 = 121,189.15/x
  3. Step 3: Cross multiply
    216,682.53x = 299,020.17 × 121,189.15
  4. Step 4: Simplify right side
    216,682.53x = 36,238,000,235.16
  5. Step 5: Solve for x
    x = 36,238,000,235.16/216,682.53
  6. Step 6: Final answer
    x = 167,240.06

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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.