Home / 205,738.24-308,289.84-138,916.48

Finding the Fourth Proportional to 205,738.24, 308,289.84 and 138,916.48

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Solution

The fourth proportional to 205,738.24, 308,289.84 and 138,916.48 is: 208,160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,738.24 : 308,289.84 = 138,916.48 : x
  2. Step 2: Convert to fraction form
    205,738.24/308,289.84 = 138,916.48/x
  3. Step 3: Cross multiply
    205,738.24x = 308,289.84 × 138,916.48
  4. Step 4: Simplify right side
    205,738.24x = 42,826,539,392.56
  5. Step 5: Solve for x
    x = 42,826,539,392.56/205,738.24
  6. Step 6: Final answer
    x = 208,160.33

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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.