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Finding the Fourth Proportional to 216,392.70, 324,005.85 and 156,906.30

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Solution

The fourth proportional to 216,392.70, 324,005.85 and 156,906.30 is: 234,936.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,392.70 : 324,005.85 = 156,906.30 : x
  2. Step 2: Convert to fraction form
    216,392.70/324,005.85 = 156,906.30/x
  3. Step 3: Cross multiply
    216,392.70x = 324,005.85 × 156,906.30
  4. Step 4: Simplify right side
    216,392.70x = 50,838,559,101.86
  5. Step 5: Solve for x
    x = 50,838,559,101.86/216,392.70
  6. Step 6: Final answer
    x = 234,936.57

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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.