Home / 395,108.73-545,251.40-213,820.60

Finding the Fourth Proportional to 395,108.73, 545,251.40 and 213,820.60

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Solution

The fourth proportional to 395,108.73, 545,251.40 and 213,820.60 is: 295,073.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,108.73 : 545,251.40 = 213,820.60 : x
  2. Step 2: Convert to fraction form
    395,108.73/545,251.40 = 213,820.60/x
  3. Step 3: Cross multiply
    395,108.73x = 545,251.40 × 213,820.60
  4. Step 4: Simplify right side
    395,108.73x = 116,585,981,498.84
  5. Step 5: Solve for x
    x = 116,585,981,498.84/395,108.73
  6. Step 6: Final answer
    x = 295,073.16

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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.