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Finding the Fourth Proportional to 219,219.40, 329,174.70 and 125,907.40

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Solution

The fourth proportional to 219,219.40, 329,174.70 and 125,907.40 is: 189,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,219.40 : 329,174.70 = 125,907.40 : x
  2. Step 2: Convert to fraction form
    219,219.40/329,174.70 = 125,907.40/x
  3. Step 3: Cross multiply
    219,219.40x = 329,174.70 × 125,907.40
  4. Step 4: Simplify right side
    219,219.40x = 41,445,530,622.78
  5. Step 5: Solve for x
    x = 41,445,530,622.78/219,219.40
  6. Step 6: Final answer
    x = 189,059.59

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1.5x scale

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.