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Finding the Fourth Proportional to 303,485.31, 418,572.90 and 194,599.98

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Solution

The fourth proportional to 303,485.31, 418,572.90 and 194,599.98 is: 268,396.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,485.31 : 418,572.90 = 194,599.98 : x
  2. Step 2: Convert to fraction form
    303,485.31/418,572.90 = 194,599.98/x
  3. Step 3: Cross multiply
    303,485.31x = 418,572.90 × 194,599.98
  4. Step 4: Simplify right side
    303,485.31x = 81,454,277,968.54
  5. Step 5: Solve for x
    x = 81,454,277,968.54/303,485.31
  6. Step 6: Final answer
    x = 268,396.11

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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.