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Finding the Fourth Proportional to 230,480.69, 345,641.07 and 80,717.67

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Solution

The fourth proportional to 230,480.69, 345,641.07 and 80,717.67 is: 121,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,480.69 : 345,641.07 = 80,717.67 : x
  2. Step 2: Convert to fraction form
    230,480.69/345,641.07 = 80,717.67/x
  3. Step 3: Cross multiply
    230,480.69x = 345,641.07 × 80,717.67
  4. Step 4: Simplify right side
    230,480.69x = 27,899,342,129.40
  5. Step 5: Solve for x
    x = 27,899,342,129.40/230,480.69
  6. Step 6: Final answer
    x = 121,048.50

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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.