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Finding the Fourth Proportional to 300,878.07, 451,345.86 and 84,736.26

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Solution

The fourth proportional to 300,878.07, 451,345.86 and 84,736.26 is: 127,112.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,878.07 : 451,345.86 = 84,736.26 : x
  2. Step 2: Convert to fraction form
    300,878.07/451,345.86 = 84,736.26/x
  3. Step 3: Cross multiply
    300,878.07x = 451,345.86 × 84,736.26
  4. Step 4: Simplify right side
    300,878.07x = 38,245,360,142.88
  5. Step 5: Solve for x
    x = 38,245,360,142.88/300,878.07
  6. Step 6: Final answer
    x = 127,112.49

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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.