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Finding the Fourth Proportional to 219,618.60, 329,427.90 and 53,406.60

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Solution

The fourth proportional to 219,618.60, 329,427.90 and 53,406.60 is: 80,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,618.60 : 329,427.90 = 53,406.60 : x
  2. Step 2: Convert to fraction form
    219,618.60/329,427.90 = 53,406.60/x
  3. Step 3: Cross multiply
    219,618.60x = 329,427.90 × 53,406.60
  4. Step 4: Simplify right side
    219,618.60x = 17,593,624,084.14
  5. Step 5: Solve for x
    x = 17,593,624,084.14/219,618.60
  6. Step 6: Final answer
    x = 80,109.90

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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.