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Finding the Fourth Proportional to 386,796.38, 580,063.18 and 134,017.88

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Solution

The fourth proportional to 386,796.38, 580,063.18 and 134,017.88 is: 200,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,796.38 : 580,063.18 = 134,017.88 : x
  2. Step 2: Convert to fraction form
    386,796.38/580,063.18 = 134,017.88/x
  3. Step 3: Cross multiply
    386,796.38x = 580,063.18 × 134,017.88
  4. Step 4: Simplify right side
    386,796.38x = 77,738,834,749.34
  5. Step 5: Solve for x
    x = 77,738,834,749.34/386,796.38
  6. Step 6: Final answer
    x = 200,981.29

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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.