Home / 386,935.12-580,286.04-137,602

Finding the Fourth Proportional to 386,935.12, 580,286.04 and 137,602

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Solution

The fourth proportional to 386,935.12, 580,286.04 and 137,602 is: 206,361.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,935.12 : 580,286.04 = 137,602 : x
  2. Step 2: Convert to fraction form
    386,935.12/580,286.04 = 137,602/x
  3. Step 3: Cross multiply
    386,935.12x = 580,286.04 × 137,602
  4. Step 4: Simplify right side
    386,935.12x = 79,848,519,676.08
  5. Step 5: Solve for x
    x = 79,848,519,676.08/386,935.12
  6. Step 6: Final answer
    x = 206,361.52

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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.