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Finding the Fourth Proportional to 331,396.95, 457,330.86 and 188,160.06

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Solution

The fourth proportional to 331,396.95, 457,330.86 and 188,160.06 is: 259,662.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,396.95 : 457,330.86 = 188,160.06 : x
  2. Step 2: Convert to fraction form
    331,396.95/457,330.86 = 188,160.06/x
  3. Step 3: Cross multiply
    331,396.95x = 457,330.86 × 188,160.06
  4. Step 4: Simplify right side
    331,396.95x = 86,051,403,772.44
  5. Step 5: Solve for x
    x = 86,051,403,772.44/331,396.95
  6. Step 6: Final answer
    x = 259,662.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.