Home / 218,815.21-327,654.87-187,426.63

Finding the Fourth Proportional to 218,815.21, 327,654.87 and 187,426.63

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Solution

The fourth proportional to 218,815.21, 327,654.87 and 187,426.63 is: 280,653.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,815.21 : 327,654.87 = 187,426.63 : x
  2. Step 2: Convert to fraction form
    218,815.21/327,654.87 = 187,426.63/x
  3. Step 3: Cross multiply
    218,815.21x = 327,654.87 × 187,426.63
  4. Step 4: Simplify right side
    218,815.21x = 61,411,248,087.19
  5. Step 5: Solve for x
    x = 61,411,248,087.19/218,815.21
  6. Step 6: Final answer
    x = 280,653.47

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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.