Home / 513,586.16-769,961.76-214,289.78

Finding the Fourth Proportional to 513,586.16, 769,961.76 and 214,289.78

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Solution

The fourth proportional to 513,586.16, 769,961.76 and 214,289.78 is: 321,260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,586.16 : 769,961.76 = 214,289.78 : x
  2. Step 2: Convert to fraction form
    513,586.16/769,961.76 = 214,289.78/x
  3. Step 3: Cross multiply
    513,586.16x = 769,961.76 × 214,289.78
  4. Step 4: Simplify right side
    513,586.16x = 164,994,936,158.81
  5. Step 5: Solve for x
    x = 164,994,936,158.81/513,586.16
  6. Step 6: Final answer
    x = 321,260.48

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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.