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Finding the Fourth Proportional to 386,101.01, 579,228.74 and 133,390.73

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Solution

The fourth proportional to 386,101.01, 579,228.74 and 133,390.73 is: 200,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,101.01 : 579,228.74 = 133,390.73 : x
  2. Step 2: Convert to fraction form
    386,101.01/579,228.74 = 133,390.73/x
  3. Step 3: Cross multiply
    386,101.01x = 579,228.74 × 133,390.73
  4. Step 4: Simplify right side
    386,101.01x = 77,263,745,746.91
  5. Step 5: Solve for x
    x = 77,263,745,746.91/386,101.01
  6. Step 6: Final answer
    x = 200,112.78

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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.