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Finding the Fourth Proportional to 516,901.15, 775,034.20 and 200,989.81

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Solution

The fourth proportional to 516,901.15, 775,034.20 and 200,989.81 is: 301,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,901.15 : 775,034.20 = 200,989.81 : x
  2. Step 2: Convert to fraction form
    516,901.15/775,034.20 = 200,989.81/x
  3. Step 3: Cross multiply
    516,901.15x = 775,034.20 × 200,989.81
  4. Step 4: Simplify right side
    516,901.15x = 155,773,976,601.50
  5. Step 5: Solve for x
    x = 155,773,976,601.50/516,901.15
  6. Step 6: Final answer
    x = 301,361.25

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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.