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Finding the Fourth Proportional to 300,908.80, 451,363.20 and 123,543.10

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Solution

The fourth proportional to 300,908.80, 451,363.20 and 123,543.10 is: 185,314.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,908.80 : 451,363.20 = 123,543.10 : x
  2. Step 2: Convert to fraction form
    300,908.80/451,363.20 = 123,543.10/x
  3. Step 3: Cross multiply
    300,908.80x = 451,363.20 × 123,543.10
  4. Step 4: Simplify right side
    300,908.80x = 55,762,808,953.92
  5. Step 5: Solve for x
    x = 55,762,808,953.92/300,908.80
  6. Step 6: Final answer
    x = 185,314.65

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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.