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Finding the Fourth Proportional to 516,986.85, 775,480.55 and 162,028.52

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Solution

The fourth proportional to 516,986.85, 775,480.55 and 162,028.52 is: 243,042.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,986.85 : 775,480.55 = 162,028.52 : x
  2. Step 2: Convert to fraction form
    516,986.85/775,480.55 = 162,028.52/x
  3. Step 3: Cross multiply
    516,986.85x = 775,480.55 × 162,028.52
  4. Step 4: Simplify right side
    516,986.85x = 125,649,965,805.29
  5. Step 5: Solve for x
    x = 125,649,965,805.29/516,986.85
  6. Step 6: Final answer
    x = 243,042.87

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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.