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Finding the Fourth Proportional to 304,047.20, 455,379.60 and 192,072.80

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Solution

The fourth proportional to 304,047.20, 455,379.60 and 192,072.80 is: 287,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,047.20 : 455,379.60 = 192,072.80 : x
  2. Step 2: Convert to fraction form
    304,047.20/455,379.60 = 192,072.80/x
  3. Step 3: Cross multiply
    304,047.20x = 455,379.60 × 192,072.80
  4. Step 4: Simplify right side
    304,047.20x = 87,466,034,834.88
  5. Step 5: Solve for x
    x = 87,466,034,834.88/304,047.20
  6. Step 6: Final answer
    x = 287,672.55

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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.