Home / 216,815.84-325,282.32-90,414.24

Finding the Fourth Proportional to 216,815.84, 325,282.32 and 90,414.24

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Solution

The fourth proportional to 216,815.84, 325,282.32 and 90,414.24 is: 135,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,815.84 : 325,282.32 = 90,414.24 : x
  2. Step 2: Convert to fraction form
    216,815.84/325,282.32 = 90,414.24/x
  3. Step 3: Cross multiply
    216,815.84x = 325,282.32 × 90,414.24
  4. Step 4: Simplify right side
    216,815.84x = 29,410,153,748.24
  5. Step 5: Solve for x
    x = 29,410,153,748.24/216,815.84
  6. Step 6: Final answer
    x = 135,645.78

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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.