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Finding the Fourth Proportional to 341,375.80, 512,063.70 and 128,143.30

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Solution

The fourth proportional to 341,375.80, 512,063.70 and 128,143.30 is: 192,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,375.80 : 512,063.70 = 128,143.30 : x
  2. Step 2: Convert to fraction form
    341,375.80/512,063.70 = 128,143.30/x
  3. Step 3: Cross multiply
    341,375.80x = 512,063.70 × 128,143.30
  4. Step 4: Simplify right side
    341,375.80x = 65,617,532,328.21
  5. Step 5: Solve for x
    x = 65,617,532,328.21/341,375.80
  6. Step 6: Final answer
    x = 192,214.95

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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.