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Finding the Fourth Proportional to 345,785.68, 515,974.10 and 273,893.68

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Solution

The fourth proportional to 345,785.68, 515,974.10 and 273,893.68 is: 408,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,785.68 : 515,974.10 = 273,893.68 : x
  2. Step 2: Convert to fraction form
    345,785.68/515,974.10 = 273,893.68/x
  3. Step 3: Cross multiply
    345,785.68x = 515,974.10 × 273,893.68
  4. Step 4: Simplify right side
    345,785.68x = 141,322,045,033.69
  5. Step 5: Solve for x
    x = 141,322,045,033.69/345,785.68
  6. Step 6: Final answer
    x = 408,698.37

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.