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Finding the Fourth Proportional to 501,111.28, 751,710.63 and 127,134.28

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Solution

The fourth proportional to 501,111.28, 751,710.63 and 127,134.28 is: 190,712.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,111.28 : 751,710.63 = 127,134.28 : x
  2. Step 2: Convert to fraction form
    501,111.28/751,710.63 = 127,134.28/x
  3. Step 3: Cross multiply
    501,111.28x = 751,710.63 × 127,134.28
  4. Step 4: Simplify right side
    501,111.28x = 95,568,189,713.40
  5. Step 5: Solve for x
    x = 95,568,189,713.40/501,111.28
  6. Step 6: Final answer
    x = 190,712.51

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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.