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Finding the Fourth Proportional to 383,994.20, 575,991.30 and 342,003.80

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Solution

The fourth proportional to 383,994.20, 575,991.30 and 342,003.80 is: 513,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,994.20 : 575,991.30 = 342,003.80 : x
  2. Step 2: Convert to fraction form
    383,994.20/575,991.30 = 342,003.80/x
  3. Step 3: Cross multiply
    383,994.20x = 575,991.30 × 342,003.80
  4. Step 4: Simplify right side
    383,994.20x = 196,991,213,366.94
  5. Step 5: Solve for x
    x = 196,991,213,366.94/383,994.20
  6. Step 6: Final answer
    x = 513,005.70

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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.