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Finding the Fourth Proportional to 505,021.80, 757,532.70 and 131,044.80

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Solution

The fourth proportional to 505,021.80, 757,532.70 and 131,044.80 is: 196,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,021.80 : 757,532.70 = 131,044.80 : x
  2. Step 2: Convert to fraction form
    505,021.80/757,532.70 = 131,044.80/x
  3. Step 3: Cross multiply
    505,021.80x = 757,532.70 × 131,044.80
  4. Step 4: Simplify right side
    505,021.80x = 99,270,721,164.96
  5. Step 5: Solve for x
    x = 99,270,721,164.96/505,021.80
  6. Step 6: Final answer
    x = 196,567.20

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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.