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Finding the Fourth Proportional to 341,429.40, 511,745.32 and 256,917.91

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Solution

The fourth proportional to 341,429.40, 511,745.32 and 256,917.91 is: 385,076.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,429.40 : 511,745.32 = 256,917.91 : x
  2. Step 2: Convert to fraction form
    341,429.40/511,745.32 = 256,917.91/x
  3. Step 3: Cross multiply
    341,429.40x = 511,745.32 × 256,917.91
  4. Step 4: Simplify right side
    341,429.40x = 131,476,538,066.68
  5. Step 5: Solve for x
    x = 131,476,538,066.68/341,429.40
  6. Step 6: Final answer
    x = 385,076.79

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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.