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Finding the Fourth Proportional to 664,274.80, 996,579.08 and 190,961

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Solution

The fourth proportional to 664,274.80, 996,579.08 and 190,961 is: 286,489.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,274.80 : 996,579.08 = 190,961 : x
  2. Step 2: Convert to fraction form
    664,274.80/996,579.08 = 190,961/x
  3. Step 3: Cross multiply
    664,274.80x = 996,579.08 × 190,961
  4. Step 4: Simplify right side
    664,274.80x = 190,307,737,695.88
  5. Step 5: Solve for x
    x = 190,307,737,695.88/664,274.80
  6. Step 6: Final answer
    x = 286,489.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.