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Finding the Fourth Proportional to 219,362.58, 329,065.47 and 91,252.58

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Solution

The fourth proportional to 219,362.58, 329,065.47 and 91,252.58 is: 136,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,362.58 : 329,065.47 = 91,252.58 : x
  2. Step 2: Convert to fraction form
    219,362.58/329,065.47 = 91,252.58/x
  3. Step 3: Cross multiply
    219,362.58x = 329,065.47 × 91,252.58
  4. Step 4: Simplify right side
    219,362.58x = 30,028,071,481.09
  5. Step 5: Solve for x
    x = 30,028,071,481.09/219,362.58
  6. Step 6: Final answer
    x = 136,887.85

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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.