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Finding the Fourth Proportional to 395,619, 545,954.22 and 216,767.16

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Solution

The fourth proportional to 395,619, 545,954.22 and 216,767.16 is: 299,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,619 : 545,954.22 = 216,767.16 : x
  2. Step 2: Convert to fraction form
    395,619/545,954.22 = 216,767.16/x
  3. Step 3: Cross multiply
    395,619x = 545,954.22 × 216,767.16
  4. Step 4: Simplify right side
    395,619x = 118,344,945,759.42
  5. Step 5: Solve for x
    x = 118,344,945,759.42/395,619
  6. Step 6: Final answer
    x = 299,138.68

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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.