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Finding the Fourth Proportional to 501,189.52, 751,786.80 and 127,212.64

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Solution

The fourth proportional to 501,189.52, 751,786.80 and 127,212.64 is: 190,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,189.52 : 751,786.80 = 127,212.64 : x
  2. Step 2: Convert to fraction form
    501,189.52/751,786.80 = 127,212.64/x
  3. Step 3: Cross multiply
    501,189.52x = 751,786.80 × 127,212.64
  4. Step 4: Simplify right side
    501,189.52x = 95,636,783,545.15
  5. Step 5: Solve for x
    x = 95,636,783,545.15/501,189.52
  6. Step 6: Final answer
    x = 190,819.60

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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.