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Finding the Fourth Proportional to 230,900.79, 345,865.05 and 118,238.70

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Solution

The fourth proportional to 230,900.79, 345,865.05 and 118,238.70 is: 177,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,900.79 : 345,865.05 = 118,238.70 : x
  2. Step 2: Convert to fraction form
    230,900.79/345,865.05 = 118,238.70/x
  3. Step 3: Cross multiply
    230,900.79x = 345,865.05 × 118,238.70
  4. Step 4: Simplify right side
    230,900.79x = 40,894,633,887.44
  5. Step 5: Solve for x
    x = 40,894,633,887.44/230,900.79
  6. Step 6: Final answer
    x = 177,109.11

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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.