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Finding the Fourth Proportional to 395,083.14, 592,719.03 and 128,843.88

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Solution

The fourth proportional to 395,083.14, 592,719.03 and 128,843.88 is: 193,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,083.14 : 592,719.03 = 128,843.88 : x
  2. Step 2: Convert to fraction form
    395,083.14/592,719.03 = 128,843.88/x
  3. Step 3: Cross multiply
    395,083.14x = 592,719.03 × 128,843.88
  4. Step 4: Simplify right side
    395,083.14x = 76,368,219,575.04
  5. Step 5: Solve for x
    x = 76,368,219,575.04/395,083.14
  6. Step 6: Final answer
    x = 193,296.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.