Home / 412,749.85-619,118.61-143,074.30

Finding the Fourth Proportional to 412,749.85, 619,118.61 and 143,074.30

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Solution

The fourth proportional to 412,749.85, 619,118.61 and 143,074.30 is: 214,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,749.85 : 619,118.61 = 143,074.30 : x
  2. Step 2: Convert to fraction form
    412,749.85/619,118.61 = 143,074.30/x
  3. Step 3: Cross multiply
    412,749.85x = 619,118.61 × 143,074.30
  4. Step 4: Simplify right side
    412,749.85x = 88,579,959,658.40
  5. Step 5: Solve for x
    x = 88,579,959,658.40/412,749.85
  6. Step 6: Final answer
    x = 214,609.31

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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.