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Finding the Fourth Proportional to 340,906.79, 511,434 and 130,544.73

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Solution

The fourth proportional to 340,906.79, 511,434 and 130,544.73 is: 195,845.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,906.79 : 511,434 = 130,544.73 : x
  2. Step 2: Convert to fraction form
    340,906.79/511,434 = 130,544.73/x
  3. Step 3: Cross multiply
    340,906.79x = 511,434 × 130,544.73
  4. Step 4: Simplify right side
    340,906.79x = 66,765,013,442.82
  5. Step 5: Solve for x
    x = 66,765,013,442.82/340,906.79
  6. Step 6: Final answer
    x = 195,845.36

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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.