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Finding the Fourth Proportional to 383,993.70, 575,990.55 and 342,003.30

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Solution

The fourth proportional to 383,993.70, 575,990.55 and 342,003.30 is: 513,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,993.70 : 575,990.55 = 342,003.30 : x
  2. Step 2: Convert to fraction form
    383,993.70/575,990.55 = 342,003.30/x
  3. Step 3: Cross multiply
    383,993.70x = 575,990.55 × 342,003.30
  4. Step 4: Simplify right side
    383,993.70x = 196,990,668,868.82
  5. Step 5: Solve for x
    x = 196,990,668,868.82/383,993.70
  6. Step 6: Final answer
    x = 513,004.95

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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.