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Finding the Fourth Proportional to 215,831.60, 323,747.40 and 203,584.40

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Solution

The fourth proportional to 215,831.60, 323,747.40 and 203,584.40 is: 305,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,831.60 : 323,747.40 = 203,584.40 : x
  2. Step 2: Convert to fraction form
    215,831.60/323,747.40 = 203,584.40/x
  3. Step 3: Cross multiply
    215,831.60x = 323,747.40 × 203,584.40
  4. Step 4: Simplify right side
    215,831.60x = 65,909,920,180.56
  5. Step 5: Solve for x
    x = 65,909,920,180.56/215,831.60
  6. Step 6: Final answer
    x = 305,376.60

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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.