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Finding the Fourth Proportional to 308,093.40, 462,140.10 and 189,379.80

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Solution

The fourth proportional to 308,093.40, 462,140.10 and 189,379.80 is: 284,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,093.40 : 462,140.10 = 189,379.80 : x
  2. Step 2: Convert to fraction form
    308,093.40/462,140.10 = 189,379.80/x
  3. Step 3: Cross multiply
    308,093.40x = 462,140.10 × 189,379.80
  4. Step 4: Simplify right side
    308,093.40x = 87,519,999,709.98
  5. Step 5: Solve for x
    x = 87,519,999,709.98/308,093.40
  6. Step 6: Final answer
    x = 284,069.70

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1.5x scale

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.