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Finding the Fourth Proportional to 288,139.52, 397,684.58 and 171,860.42

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Solution

The fourth proportional to 288,139.52, 397,684.58 and 171,860.42 is: 237,198.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,139.52 : 397,684.58 = 171,860.42 : x
  2. Step 2: Convert to fraction form
    288,139.52/397,684.58 = 171,860.42/x
  3. Step 3: Cross multiply
    288,139.52x = 397,684.58 × 171,860.42
  4. Step 4: Simplify right side
    288,139.52x = 68,346,236,098.60
  5. Step 5: Solve for x
    x = 68,346,236,098.60/288,139.52
  6. Step 6: Final answer
    x = 237,198.41

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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.