Home / 328,568.82-492,853.26-128,983.20

Finding the Fourth Proportional to 328,568.82, 492,853.26 and 128,983.20

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Solution

The fourth proportional to 328,568.82, 492,853.26 and 128,983.20 is: 193,474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,568.82 : 492,853.26 = 128,983.20 : x
  2. Step 2: Convert to fraction form
    328,568.82/492,853.26 = 128,983.20/x
  3. Step 3: Cross multiply
    328,568.82x = 492,853.26 × 128,983.20
  4. Step 4: Simplify right side
    328,568.82x = 63,569,790,605.23
  5. Step 5: Solve for x
    x = 63,569,790,605.23/328,568.82
  6. Step 6: Final answer
    x = 193,474.81

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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.