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Finding the Fourth Proportional to 201,221.52, 301,892.64 and 81,216.73

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Solution

The fourth proportional to 201,221.52, 301,892.64 and 81,216.73 is: 121,849.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,221.52 : 301,892.64 = 81,216.73 : x
  2. Step 2: Convert to fraction form
    201,221.52/301,892.64 = 81,216.73/x
  3. Step 3: Cross multiply
    201,221.52x = 301,892.64 × 81,216.73
  4. Step 4: Simplify right side
    201,221.52x = 24,518,733,031.87
  5. Step 5: Solve for x
    x = 24,518,733,031.87/201,221.52
  6. Step 6: Final answer
    x = 121,849.46

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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.