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Finding the Fourth Proportional to 325,686.72, 488,536.32 and 214,079.36

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Solution

The fourth proportional to 325,686.72, 488,536.32 and 214,079.36 is: 321,123.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,686.72 : 488,536.32 = 214,079.36 : x
  2. Step 2: Convert to fraction form
    325,686.72/488,536.32 = 214,079.36/x
  3. Step 3: Cross multiply
    325,686.72x = 488,536.32 × 214,079.36
  4. Step 4: Simplify right side
    325,686.72x = 104,585,542,722.36
  5. Step 5: Solve for x
    x = 104,585,542,722.36/325,686.72
  6. Step 6: Final answer
    x = 321,123.14

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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.