Home / 325,146.38-487,384.34-135,716.98

Finding the Fourth Proportional to 325,146.38, 487,384.34 and 135,716.98

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Solution

The fourth proportional to 325,146.38, 487,384.34 and 135,716.98 is: 203,435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,146.38 : 487,384.34 = 135,716.98 : x
  2. Step 2: Convert to fraction form
    325,146.38/487,384.34 = 135,716.98/x
  3. Step 3: Cross multiply
    325,146.38x = 487,384.34 × 135,716.98
  4. Step 4: Simplify right side
    325,146.38x = 66,146,328,827.05
  5. Step 5: Solve for x
    x = 66,146,328,827.05/325,146.38
  6. Step 6: Final answer
    x = 203,435.54

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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.