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Finding the Fourth Proportional to 230,458.60, 345,720.30 and 72,670.60

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Solution

The fourth proportional to 230,458.60, 345,720.30 and 72,670.60 is: 109,016.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,458.60 : 345,720.30 = 72,670.60 : x
  2. Step 2: Convert to fraction form
    230,458.60/345,720.30 = 72,670.60/x
  3. Step 3: Cross multiply
    230,458.60x = 345,720.30 × 72,670.60
  4. Step 4: Simplify right side
    230,458.60x = 25,123,701,633.18
  5. Step 5: Solve for x
    x = 25,123,701,633.18/230,458.60
  6. Step 6: Final answer
    x = 109,016.12

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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.