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Finding the Fourth Proportional to 221,258.40, 331,888.80 and 55,046.40

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Solution

The fourth proportional to 221,258.40, 331,888.80 and 55,046.40 is: 82,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,258.40 : 331,888.80 = 55,046.40 : x
  2. Step 2: Convert to fraction form
    221,258.40/331,888.80 = 55,046.40/x
  3. Step 3: Cross multiply
    221,258.40x = 331,888.80 × 55,046.40
  4. Step 4: Simplify right side
    221,258.40x = 18,269,283,640.32
  5. Step 5: Solve for x
    x = 18,269,283,640.32/221,258.40
  6. Step 6: Final answer
    x = 82,569.90

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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.