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Finding the Fourth Proportional to 500,845.76, 751,296 and 126,872

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Solution

The fourth proportional to 500,845.76, 751,296 and 126,872 is: 190,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,845.76 : 751,296 = 126,872 : x
  2. Step 2: Convert to fraction form
    500,845.76/751,296 = 126,872/x
  3. Step 3: Cross multiply
    500,845.76x = 751,296 × 126,872
  4. Step 4: Simplify right side
    500,845.76x = 95,318,426,112
  5. Step 5: Solve for x
    x = 95,318,426,112/500,845.76
  6. Step 6: Final answer
    x = 190,314.93

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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.