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Finding the Fourth Proportional to 213,728.93, 320,626.20 and 73,454.75

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Solution

The fourth proportional to 213,728.93, 320,626.20 and 73,454.75 is: 110,193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,728.93 : 320,626.20 = 73,454.75 : x
  2. Step 2: Convert to fraction form
    213,728.93/320,626.20 = 73,454.75/x
  3. Step 3: Cross multiply
    213,728.93x = 320,626.20 × 73,454.75
  4. Step 4: Simplify right side
    213,728.93x = 23,551,517,364.45
  5. Step 5: Solve for x
    x = 23,551,517,364.45/213,728.93
  6. Step 6: Final answer
    x = 110,193.40

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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.