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Finding the Fourth Proportional to 171,472.20, 257,208.30 and 108,486.60

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Solution

The fourth proportional to 171,472.20, 257,208.30 and 108,486.60 is: 162,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,472.20 : 257,208.30 = 108,486.60 : x
  2. Step 2: Convert to fraction form
    171,472.20/257,208.30 = 108,486.60/x
  3. Step 3: Cross multiply
    171,472.20x = 257,208.30 × 108,486.60
  4. Step 4: Simplify right side
    171,472.20x = 27,903,653,958.78
  5. Step 5: Solve for x
    x = 27,903,653,958.78/171,472.20
  6. Step 6: Final answer
    x = 162,729.90

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1.5x scale

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.