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Finding the Fourth Proportional to 505,987.78, 758,980.92 and 132,010.78

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Solution

The fourth proportional to 505,987.78, 758,980.92 and 132,010.78 is: 198,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,987.78 : 758,980.92 = 132,010.78 : x
  2. Step 2: Convert to fraction form
    505,987.78/758,980.92 = 132,010.78/x
  3. Step 3: Cross multiply
    505,987.78x = 758,980.92 × 132,010.78
  4. Step 4: Simplify right side
    505,987.78x = 100,193,663,254.32
  5. Step 5: Solve for x
    x = 100,193,663,254.32/505,987.78
  6. Step 6: Final answer
    x = 198,015.97

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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.