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Finding the Fourth Proportional to 228,939.80, 343,409.70 and 104,523.80

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Solution

The fourth proportional to 228,939.80, 343,409.70 and 104,523.80 is: 156,785.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,939.80 : 343,409.70 = 104,523.80 : x
  2. Step 2: Convert to fraction form
    228,939.80/343,409.70 = 104,523.80/x
  3. Step 3: Cross multiply
    228,939.80x = 343,409.70 × 104,523.80
  4. Step 4: Simplify right side
    228,939.80x = 35,894,486,800.86
  5. Step 5: Solve for x
    x = 35,894,486,800.86/228,939.80
  6. Step 6: Final answer
    x = 156,785.70

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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.