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Finding the Fourth Proportional to 330,139.62, 455,594.54 and 194,179.28

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Solution

The fourth proportional to 330,139.62, 455,594.54 and 194,179.28 is: 267,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,139.62 : 455,594.54 = 194,179.28 : x
  2. Step 2: Convert to fraction form
    330,139.62/455,594.54 = 194,179.28/x
  3. Step 3: Cross multiply
    330,139.62x = 455,594.54 × 194,179.28
  4. Step 4: Simplify right side
    330,139.62x = 88,467,016,500.26
  5. Step 5: Solve for x
    x = 88,467,016,500.26/330,139.62
  6. Step 6: Final answer
    x = 267,968.49

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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.