Home / 250,455.38-345,628.49-137,285.42

Finding the Fourth Proportional to 250,455.38, 345,628.49 and 137,285.42

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Solution

The fourth proportional to 250,455.38, 345,628.49 and 137,285.42 is: 189,453.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,455.38 : 345,628.49 = 137,285.42 : x
  2. Step 2: Convert to fraction form
    250,455.38/345,628.49 = 137,285.42/x
  3. Step 3: Cross multiply
    250,455.38x = 345,628.49 × 137,285.42
  4. Step 4: Simplify right side
    250,455.38x = 47,449,749,999.05
  5. Step 5: Solve for x
    x = 47,449,749,999.05/250,455.38
  6. Step 6: Final answer
    x = 189,453.91

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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.