Home / 513,868.20-770,763.90-214,271.40

Finding the Fourth Proportional to 513,868.20, 770,763.90 and 214,271.40

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Solution

The fourth proportional to 513,868.20, 770,763.90 and 214,271.40 is: 321,391.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,868.20 : 770,763.90 = 214,271.40 : x
  2. Step 2: Convert to fraction form
    513,868.20/770,763.90 = 214,271.40/x
  3. Step 3: Cross multiply
    513,868.20x = 770,763.90 × 214,271.40
  4. Step 4: Simplify right side
    513,868.20x = 165,152,659,922.46
  5. Step 5: Solve for x
    x = 165,152,659,922.46/513,868.20
  6. Step 6: Final answer
    x = 321,391.09

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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.