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Finding the Fourth Proportional to 345,556.66, 518,121.15 and 134,946.94

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Solution

The fourth proportional to 345,556.66, 518,121.15 and 134,946.94 is: 202,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,556.66 : 518,121.15 = 134,946.94 : x
  2. Step 2: Convert to fraction form
    345,556.66/518,121.15 = 134,946.94/x
  3. Step 3: Cross multiply
    345,556.66x = 518,121.15 × 134,946.94
  4. Step 4: Simplify right side
    345,556.66x = 69,918,861,940.43
  5. Step 5: Solve for x
    x = 69,918,861,940.43/345,556.66
  6. Step 6: Final answer
    x = 202,336.90

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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.