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Finding the Fourth Proportional to 386,795.88, 580,062.43 and 134,017.37

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Solution

The fourth proportional to 386,795.88, 580,062.43 and 134,017.37 is: 200,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,795.88 : 580,062.43 = 134,017.37 : x
  2. Step 2: Convert to fraction form
    386,795.88/580,062.43 = 134,017.37/x
  3. Step 3: Cross multiply
    386,795.88x = 580,062.43 × 134,017.37
  4. Step 4: Simplify right side
    386,795.88x = 77,738,441,304.41
  5. Step 5: Solve for x
    x = 77,738,441,304.41/386,795.88
  6. Step 6: Final answer
    x = 200,980.53

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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.