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Finding the Fourth Proportional to 516,990.51, 775,335.11 and 201,372.39

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Solution

The fourth proportional to 516,990.51, 775,335.11 and 201,372.39 is: 301,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,990.51 : 775,335.11 = 201,372.39 : x
  2. Step 2: Convert to fraction form
    516,990.51/775,335.11 = 201,372.39/x
  3. Step 3: Cross multiply
    516,990.51x = 775,335.11 × 201,372.39
  4. Step 4: Simplify right side
    516,990.51x = 156,131,083,144.75
  5. Step 5: Solve for x
    x = 156,131,083,144.75/516,990.51
  6. Step 6: Final answer
    x = 301,999.90

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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.