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Finding the Fourth Proportional to 505,407.69, 758,108.48 and 126,326.52

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Solution

The fourth proportional to 505,407.69, 758,108.48 and 126,326.52 is: 189,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,407.69 : 758,108.48 = 126,326.52 : x
  2. Step 2: Convert to fraction form
    505,407.69/758,108.48 = 126,326.52/x
  3. Step 3: Cross multiply
    505,407.69x = 758,108.48 × 126,326.52
  4. Step 4: Simplify right side
    505,407.69x = 95,769,205,429.26
  5. Step 5: Solve for x
    x = 95,769,205,429.26/505,407.69
  6. Step 6: Final answer
    x = 189,489.02

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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.