Home / 217,971.87-300,828.06-122,476.50

Finding the Fourth Proportional to 217,971.87, 300,828.06 and 122,476.50

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Solution

The fourth proportional to 217,971.87, 300,828.06 and 122,476.50 is: 169,032.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,971.87 : 300,828.06 = 122,476.50 : x
  2. Step 2: Convert to fraction form
    217,971.87/300,828.06 = 122,476.50/x
  3. Step 3: Cross multiply
    217,971.87x = 300,828.06 × 122,476.50
  4. Step 4: Simplify right side
    217,971.87x = 36,844,367,890.59
  5. Step 5: Solve for x
    x = 36,844,367,890.59/217,971.87
  6. Step 6: Final answer
    x = 169,032.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.