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Finding the Fourth Proportional to 304,561.35, 420,153.89 and 197,166.15

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Solution

The fourth proportional to 304,561.35, 420,153.89 and 197,166.15 is: 271,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,561.35 : 420,153.89 = 197,166.15 : x
  2. Step 2: Convert to fraction form
    304,561.35/420,153.89 = 197,166.15/x
  3. Step 3: Cross multiply
    304,561.35x = 420,153.89 × 197,166.15
  4. Step 4: Simplify right side
    304,561.35x = 82,840,123,912.99
  5. Step 5: Solve for x
    x = 82,840,123,912.99/304,561.35
  6. Step 6: Final answer
    x = 271,998.15

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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.