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Finding the Fourth Proportional to 322,722.70, 484,216.50 and 142,713.16

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Solution

The fourth proportional to 322,722.70, 484,216.50 and 142,713.16 is: 214,128.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,722.70 : 484,216.50 = 142,713.16 : x
  2. Step 2: Convert to fraction form
    322,722.70/484,216.50 = 142,713.16/x
  3. Step 3: Cross multiply
    322,722.70x = 484,216.50 × 142,713.16
  4. Step 4: Simplify right side
    322,722.70x = 69,104,066,839.14
  5. Step 5: Solve for x
    x = 69,104,066,839.14/322,722.70
  6. Step 6: Final answer
    x = 214,128.31

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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.