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Finding the Fourth Proportional to 517,515.55, 714,171.30 and 288,067.85

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Solution

The fourth proportional to 517,515.55, 714,171.30 and 288,067.85 is: 397,533.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,515.55 : 714,171.30 = 288,067.85 : x
  2. Step 2: Convert to fraction form
    517,515.55/714,171.30 = 288,067.85/x
  3. Step 3: Cross multiply
    517,515.55x = 714,171.30 × 288,067.85
  4. Step 4: Simplify right side
    517,515.55x = 205,729,790,922.71
  5. Step 5: Solve for x
    x = 205,729,790,922.71/517,515.55
  6. Step 6: Final answer
    x = 397,533.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.