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Finding the Fourth Proportional to 341,437.87, 512,212.09 and 128,222.38

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Solution

The fourth proportional to 341,437.87, 512,212.09 and 128,222.38 is: 192,354.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,437.87 : 512,212.09 = 128,222.38 : x
  2. Step 2: Convert to fraction form
    341,437.87/512,212.09 = 128,222.38/x
  3. Step 3: Cross multiply
    341,437.87x = 512,212.09 × 128,222.38
  4. Step 4: Simplify right side
    341,437.87x = 65,677,053,244.57
  5. Step 5: Solve for x
    x = 65,677,053,244.57/341,437.87
  6. Step 6: Final answer
    x = 192,354.33

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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.