Home / 217,228.56-299,787.84-121,766.40

Finding the Fourth Proportional to 217,228.56, 299,787.84 and 121,766.40

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Solution

The fourth proportional to 217,228.56, 299,787.84 and 121,766.40 is: 168,044.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,228.56 : 299,787.84 = 121,766.40 : x
  2. Step 2: Convert to fraction form
    217,228.56/299,787.84 = 121,766.40/x
  3. Step 3: Cross multiply
    217,228.56x = 299,787.84 × 121,766.40
  4. Step 4: Simplify right side
    217,228.56x = 36,504,086,040.58
  5. Step 5: Solve for x
    x = 36,504,086,040.58/217,228.56
  6. Step 6: Final answer
    x = 168,044.60

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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.