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Finding the Fourth Proportional to 491,016.40, 736,481.40 and 135,998.80

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Solution

The fourth proportional to 491,016.40, 736,481.40 and 135,998.80 is: 203,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,016.40 : 736,481.40 = 135,998.80 : x
  2. Step 2: Convert to fraction form
    491,016.40/736,481.40 = 135,998.80/x
  3. Step 3: Cross multiply
    491,016.40x = 736,481.40 × 135,998.80
  4. Step 4: Simplify right side
    491,016.40x = 100,160,586,622.32
  5. Step 5: Solve for x
    x = 100,160,586,622.32/491,016.40
  6. Step 6: Final answer
    x = 203,986.23

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1.5x scale

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.