Home / 220,788.16-331,215.36-102,471.68

Finding the Fourth Proportional to 220,788.16, 331,215.36 and 102,471.68

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Solution

The fourth proportional to 220,788.16, 331,215.36 and 102,471.68 is: 153,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,788.16 : 331,215.36 = 102,471.68 : x
  2. Step 2: Convert to fraction form
    220,788.16/331,215.36 = 102,471.68/x
  3. Step 3: Cross multiply
    220,788.16x = 331,215.36 × 102,471.68
  4. Step 4: Simplify right side
    220,788.16x = 33,940,194,381.00
  5. Step 5: Solve for x
    x = 33,940,194,381.00/220,788.16
  6. Step 6: Final answer
    x = 153,722.89

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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.