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Finding the Fourth Proportional to 410,080.10, 615,120.15 and 303,791.90

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Solution

The fourth proportional to 410,080.10, 615,120.15 and 303,791.90 is: 455,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,080.10 : 615,120.15 = 303,791.90 : x
  2. Step 2: Convert to fraction form
    410,080.10/615,120.15 = 303,791.90/x
  3. Step 3: Cross multiply
    410,080.10x = 615,120.15 × 303,791.90
  4. Step 4: Simplify right side
    410,080.10x = 186,868,519,096.79
  5. Step 5: Solve for x
    x = 186,868,519,096.79/410,080.10
  6. Step 6: Final answer
    x = 455,687.85

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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.