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Finding the Fourth Proportional to 308,977.60, 463,120.80 and 131,454.40

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Solution

The fourth proportional to 308,977.60, 463,120.80 and 131,454.40 is: 197,034.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,977.60 : 463,120.80 = 131,454.40 : x
  2. Step 2: Convert to fraction form
    308,977.60/463,120.80 = 131,454.40/x
  3. Step 3: Cross multiply
    308,977.60x = 463,120.80 × 131,454.40
  4. Step 4: Simplify right side
    308,977.60x = 60,879,266,891.52
  5. Step 5: Solve for x
    x = 60,879,266,891.52/308,977.60
  6. Step 6: Final answer
    x = 197,034.56

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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.