Home / 327,814.40-491,721.60-128,141.30

Finding the Fourth Proportional to 327,814.40, 491,721.60 and 128,141.30

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Solution

The fourth proportional to 327,814.40, 491,721.60 and 128,141.30 is: 192,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,814.40 : 491,721.60 = 128,141.30 : x
  2. Step 2: Convert to fraction form
    327,814.40/491,721.60 = 128,141.30/x
  3. Step 3: Cross multiply
    327,814.40x = 491,721.60 × 128,141.30
  4. Step 4: Simplify right side
    327,814.40x = 63,009,845,062.08
  5. Step 5: Solve for x
    x = 63,009,845,062.08/327,814.40
  6. Step 6: Final answer
    x = 192,211.95

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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.