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Finding the Fourth Proportional to 328,168.70, 492,253.05 and 187,811.90

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Solution

The fourth proportional to 328,168.70, 492,253.05 and 187,811.90 is: 281,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,168.70 : 492,253.05 = 187,811.90 : x
  2. Step 2: Convert to fraction form
    328,168.70/492,253.05 = 187,811.90/x
  3. Step 3: Cross multiply
    328,168.70x = 492,253.05 × 187,811.90
  4. Step 4: Simplify right side
    328,168.70x = 92,450,980,601.30
  5. Step 5: Solve for x
    x = 92,450,980,601.30/328,168.70
  6. Step 6: Final answer
    x = 281,717.85

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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.