Home / 221,942.25-306,281.39-121,340.25

Finding the Fourth Proportional to 221,942.25, 306,281.39 and 121,340.25

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Solution

The fourth proportional to 221,942.25, 306,281.39 and 121,340.25 is: 167,450.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,942.25 : 306,281.39 = 121,340.25 : x
  2. Step 2: Convert to fraction form
    221,942.25/306,281.39 = 121,340.25/x
  3. Step 3: Cross multiply
    221,942.25x = 306,281.39 × 121,340.25
  4. Step 4: Simplify right side
    221,942.25x = 37,164,259,826.25
  5. Step 5: Solve for x
    x = 37,164,259,826.25/221,942.25
  6. Step 6: Final answer
    x = 167,450.14

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1.5x scale

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.