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Finding the Fourth Proportional to 341,415.97, 512,179.58 and 128,200.39

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Solution

The fourth proportional to 341,415.97, 512,179.58 and 128,200.39 is: 192,321.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,415.97 : 512,179.58 = 128,200.39 : x
  2. Step 2: Convert to fraction form
    341,415.97/512,179.58 = 128,200.39/x
  3. Step 3: Cross multiply
    341,415.97x = 512,179.58 × 128,200.39
  4. Step 4: Simplify right side
    341,415.97x = 65,661,620,946.09
  5. Step 5: Solve for x
    x = 65,661,620,946.09/341,415.97
  6. Step 6: Final answer
    x = 192,321.47

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1.5x scale

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.