Home / 215,780.54-324,206.19-139,927.34

Finding the Fourth Proportional to 215,780.54, 324,206.19 and 139,927.34

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Solution

The fourth proportional to 215,780.54, 324,206.19 and 139,927.34 is: 210,238.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,780.54 : 324,206.19 = 139,927.34 : x
  2. Step 2: Convert to fraction form
    215,780.54/324,206.19 = 139,927.34/x
  3. Step 3: Cross multiply
    215,780.54x = 324,206.19 × 139,927.34
  4. Step 4: Simplify right side
    215,780.54x = 45,365,309,778.23
  5. Step 5: Solve for x
    x = 45,365,309,778.23/215,780.54
  6. Step 6: Final answer
    x = 210,238.19

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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.