Home / 289,739.10-434,520.30-200,356.44

Finding the Fourth Proportional to 289,739.10, 434,520.30 and 200,356.44

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Solution

The fourth proportional to 289,739.10, 434,520.30 and 200,356.44 is: 300,473.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,739.10 : 434,520.30 = 200,356.44 : x
  2. Step 2: Convert to fraction form
    289,739.10/434,520.30 = 200,356.44/x
  3. Step 3: Cross multiply
    289,739.10x = 434,520.30 × 200,356.44
  4. Step 4: Simplify right side
    289,739.10x = 87,058,940,415.73
  5. Step 5: Solve for x
    x = 87,058,940,415.73/289,739.10
  6. Step 6: Final answer
    x = 300,473.57

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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.