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Finding the Fourth Proportional to 324,384.36, 486,622.94 and 99,763.56

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Solution

The fourth proportional to 324,384.36, 486,622.94 and 99,763.56 is: 149,659.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,384.36 : 486,622.94 = 99,763.56 : x
  2. Step 2: Convert to fraction form
    324,384.36/486,622.94 = 99,763.56/x
  3. Step 3: Cross multiply
    324,384.36x = 486,622.94 × 99,763.56
  4. Step 4: Simplify right side
    324,384.36x = 48,547,236,872.07
  5. Step 5: Solve for x
    x = 48,547,236,872.07/324,384.36
  6. Step 6: Final answer
    x = 149,659.61

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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.