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Finding the Fourth Proportional to 341,420.22, 512,185.96 and 128,204.64

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Solution

The fourth proportional to 341,420.22, 512,185.96 and 128,204.64 is: 192,327.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,420.22 : 512,185.96 = 128,204.64 : x
  2. Step 2: Convert to fraction form
    341,420.22/512,185.96 = 128,204.64/x
  3. Step 3: Cross multiply
    341,420.22x = 512,185.96 × 128,204.64
  4. Step 4: Simplify right side
    341,420.22x = 65,664,616,614.85
  5. Step 5: Solve for x
    x = 65,664,616,614.85/341,420.22
  6. Step 6: Final answer
    x = 192,327.85

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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.