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Finding the Fourth Proportional to 300,987.96, 451,519.32 and 98,514.60

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Solution

The fourth proportional to 300,987.96, 451,519.32 and 98,514.60 is: 147,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,987.96 : 451,519.32 = 98,514.60 : x
  2. Step 2: Convert to fraction form
    300,987.96/451,519.32 = 98,514.60/x
  3. Step 3: Cross multiply
    300,987.96x = 451,519.32 × 98,514.60
  4. Step 4: Simplify right side
    300,987.96x = 44,481,245,202.07
  5. Step 5: Solve for x
    x = 44,481,245,202.07/300,987.96
  6. Step 6: Final answer
    x = 147,784.13

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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.