Home / 312,180.39-430,808.91-168,940.43

Finding the Fourth Proportional to 312,180.39, 430,808.91 and 168,940.43

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Solution

The fourth proportional to 312,180.39, 430,808.91 and 168,940.43 is: 233,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,180.39 : 430,808.91 = 168,940.43 : x
  2. Step 2: Convert to fraction form
    312,180.39/430,808.91 = 168,940.43/x
  3. Step 3: Cross multiply
    312,180.39x = 430,808.91 × 168,940.43
  4. Step 4: Simplify right side
    312,180.39x = 72,781,042,503.23
  5. Step 5: Solve for x
    x = 72,781,042,503.23/312,180.39
  6. Step 6: Final answer
    x = 233,137.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.