Home / 215,784.54-324,212.20-139,931.34

Finding the Fourth Proportional to 215,784.54, 324,212.20 and 139,931.34

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Solution

The fourth proportional to 215,784.54, 324,212.20 and 139,931.34 is: 210,244.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,784.54 : 324,212.20 = 139,931.34 : x
  2. Step 2: Convert to fraction form
    215,784.54/324,212.20 = 139,931.34/x
  3. Step 3: Cross multiply
    215,784.54x = 324,212.20 × 139,931.34
  4. Step 4: Simplify right side
    215,784.54x = 45,367,447,590.35
  5. Step 5: Solve for x
    x = 45,367,447,590.35/215,784.54
  6. Step 6: Final answer
    x = 210,244.20

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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.