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Finding the Fourth Proportional to 329,859, 455,205.60 and 178,956

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Solution

The fourth proportional to 329,859, 455,205.60 and 178,956 is: 246,959.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,859 : 455,205.60 = 178,956 : x
  2. Step 2: Convert to fraction form
    329,859/455,205.60 = 178,956/x
  3. Step 3: Cross multiply
    329,859x = 455,205.60 × 178,956
  4. Step 4: Simplify right side
    329,859x = 81,461,773,353.60
  5. Step 5: Solve for x
    x = 81,461,773,353.60/329,859
  6. Step 6: Final answer
    x = 246,959.38

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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.