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Finding the Fourth Proportional to 300,876.88, 451,325.04 and 90,516.64

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Solution

The fourth proportional to 300,876.88, 451,325.04 and 90,516.64 is: 135,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,876.88 : 451,325.04 = 90,516.64 : x
  2. Step 2: Convert to fraction form
    300,876.88/451,325.04 = 90,516.64/x
  3. Step 3: Cross multiply
    300,876.88x = 451,325.04 × 90,516.64
  4. Step 4: Simplify right side
    300,876.88x = 40,852,426,168.67
  5. Step 5: Solve for x
    x = 40,852,426,168.67/300,876.88
  6. Step 6: Final answer
    x = 135,777.88

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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.