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Finding the Fourth Proportional to 299,986.56, 450,104.06 and 131,419.80

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Solution

The fourth proportional to 299,986.56, 450,104.06 and 131,419.80 is: 197,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,986.56 : 450,104.06 = 131,419.80 : x
  2. Step 2: Convert to fraction form
    299,986.56/450,104.06 = 131,419.80/x
  3. Step 3: Cross multiply
    299,986.56x = 450,104.06 × 131,419.80
  4. Step 4: Simplify right side
    299,986.56x = 59,152,585,544.39
  5. Step 5: Solve for x
    x = 59,152,585,544.39/299,986.56
  6. Step 6: Final answer
    x = 197,184.12

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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.