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Finding the Fourth Proportional to 219,774.70, 329,771.40 and 125,077.60

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Solution

The fourth proportional to 219,774.70, 329,771.40 and 125,077.60 is: 187,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,774.70 : 329,771.40 = 125,077.60 : x
  2. Step 2: Convert to fraction form
    219,774.70/329,771.40 = 125,077.60/x
  3. Step 3: Cross multiply
    219,774.70x = 329,771.40 × 125,077.60
  4. Step 4: Simplify right side
    219,774.70x = 41,247,015,260.64
  5. Step 5: Solve for x
    x = 41,247,015,260.64/219,774.70
  6. Step 6: Final answer
    x = 187,678.63

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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.