Home / 275,815.35-380,601.86-154,947.15

Finding the Fourth Proportional to 275,815.35, 380,601.86 and 154,947.15

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Solution

The fourth proportional to 275,815.35, 380,601.86 and 154,947.15 is: 213,813.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,815.35 : 380,601.86 = 154,947.15 : x
  2. Step 2: Convert to fraction form
    275,815.35/380,601.86 = 154,947.15/x
  3. Step 3: Cross multiply
    275,815.35x = 380,601.86 × 154,947.15
  4. Step 4: Simplify right side
    275,815.35x = 58,973,172,716.96
  5. Step 5: Solve for x
    x = 58,973,172,716.96/275,815.35
  6. Step 6: Final answer
    x = 213,813.96

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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.