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Finding the Fourth Proportional to 230,310.64, 345,499.12 and 72,551.76

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Solution

The fourth proportional to 230,310.64, 345,499.12 and 72,551.76 is: 108,838.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,310.64 : 345,499.12 = 72,551.76 : x
  2. Step 2: Convert to fraction form
    230,310.64/345,499.12 = 72,551.76/x
  3. Step 3: Cross multiply
    230,310.64x = 345,499.12 × 72,551.76
  4. Step 4: Simplify right side
    230,310.64x = 25,066,569,234.45
  5. Step 5: Solve for x
    x = 25,066,569,234.45/230,310.64
  6. Step 6: Final answer
    x = 108,838.09

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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.