Home / 445,830.20-668,745.30-268,245.80

Finding the Fourth Proportional to 445,830.20, 668,745.30 and 268,245.80

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Solution

The fourth proportional to 445,830.20, 668,745.30 and 268,245.80 is: 402,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,830.20 : 668,745.30 = 268,245.80 : x
  2. Step 2: Convert to fraction form
    445,830.20/668,745.30 = 268,245.80/x
  3. Step 3: Cross multiply
    445,830.20x = 668,745.30 × 268,245.80
  4. Step 4: Simplify right side
    445,830.20x = 179,388,117,994.74
  5. Step 5: Solve for x
    x = 179,388,117,994.74/445,830.20
  6. Step 6: Final answer
    x = 402,368.70

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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.