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Finding the Fourth Proportional to 345,880.85, 515,382.71 and 308,151

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Solution

The fourth proportional to 345,880.85, 515,382.71 and 308,151 is: 459,163.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,880.85 : 515,382.71 = 308,151 : x
  2. Step 2: Convert to fraction form
    345,880.85/515,382.71 = 308,151/x
  3. Step 3: Cross multiply
    345,880.85x = 515,382.71 × 308,151
  4. Step 4: Simplify right side
    345,880.85x = 158,815,697,469.21
  5. Step 5: Solve for x
    x = 158,815,697,469.21/345,880.85
  6. Step 6: Final answer
    x = 459,163.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.