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Finding the Fourth Proportional to 329,728.70, 455,028.50 and 178,825.70

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Solution

The fourth proportional to 329,728.70, 455,028.50 and 178,825.70 is: 246,781.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,728.70 : 455,028.50 = 178,825.70 : x
  2. Step 2: Convert to fraction form
    329,728.70/455,028.50 = 178,825.70/x
  3. Step 3: Cross multiply
    329,728.70x = 455,028.50 × 178,825.70
  4. Step 4: Simplify right side
    329,728.70x = 81,370,790,032.45
  5. Step 5: Solve for x
    x = 81,370,790,032.45/329,728.70
  6. Step 6: Final answer
    x = 246,781.04

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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.