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Finding the Fourth Proportional to 329,812.64, 455,142.60 and 178,910.72

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Solution

The fourth proportional to 329,812.64, 455,142.60 and 178,910.72 is: 246,897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,812.64 : 455,142.60 = 178,910.72 : x
  2. Step 2: Convert to fraction form
    329,812.64/455,142.60 = 178,910.72/x
  3. Step 3: Cross multiply
    329,812.64x = 455,142.60 × 178,910.72
  4. Step 4: Simplify right side
    329,812.64x = 81,429,890,268.67
  5. Step 5: Solve for x
    x = 81,429,890,268.67/329,812.64
  6. Step 6: Final answer
    x = 246,897.42

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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.