Home / 305,664.94-420,945.69-220,647.34

Finding the Fourth Proportional to 305,664.94, 420,945.69 and 220,647.34

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Solution

The fourth proportional to 305,664.94, 420,945.69 and 220,647.34 is: 303,863.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,664.94 : 420,945.69 = 220,647.34 : x
  2. Step 2: Convert to fraction form
    305,664.94/420,945.69 = 220,647.34/x
  3. Step 3: Cross multiply
    305,664.94x = 420,945.69 × 220,647.34
  4. Step 4: Simplify right side
    305,664.94x = 92,880,546,782.96
  5. Step 5: Solve for x
    x = 92,880,546,782.96/305,664.94
  6. Step 6: Final answer
    x = 303,863.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.