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Finding the Fourth Proportional to 221,468.64, 332,246.73 and 81,228.48

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Solution

The fourth proportional to 221,468.64, 332,246.73 and 81,228.48 is: 121,858.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,468.64 : 332,246.73 = 81,228.48 : x
  2. Step 2: Convert to fraction form
    221,468.64/332,246.73 = 81,228.48/x
  3. Step 3: Cross multiply
    221,468.64x = 332,246.73 × 81,228.48
  4. Step 4: Simplify right side
    221,468.64x = 26,987,896,862.87
  5. Step 5: Solve for x
    x = 26,987,896,862.87/221,468.64
  6. Step 6: Final answer
    x = 121,858.77

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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.