Home / 221,569.36-331,824.24-127,790.80

Finding the Fourth Proportional to 221,569.36, 331,824.24 and 127,790.80

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Solution

The fourth proportional to 221,569.36, 331,824.24 and 127,790.80 is: 191,380.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,569.36 : 331,824.24 = 127,790.80 : x
  2. Step 2: Convert to fraction form
    221,569.36/331,824.24 = 127,790.80/x
  3. Step 3: Cross multiply
    221,569.36x = 331,824.24 × 127,790.80
  4. Step 4: Simplify right side
    221,569.36x = 42,404,085,088.99
  5. Step 5: Solve for x
    x = 42,404,085,088.99/221,569.36
  6. Step 6: Final answer
    x = 191,380.64

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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.