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Finding the Fourth Proportional to 203,220.63, 280,441.44 and 112,576.32

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Solution

The fourth proportional to 203,220.63, 280,441.44 and 112,576.32 is: 155,353.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,220.63 : 280,441.44 = 112,576.32 : x
  2. Step 2: Convert to fraction form
    203,220.63/280,441.44 = 112,576.32/x
  3. Step 3: Cross multiply
    203,220.63x = 280,441.44 × 112,576.32
  4. Step 4: Simplify right side
    203,220.63x = 31,571,065,290.70
  5. Step 5: Solve for x
    x = 31,571,065,290.70/203,220.63
  6. Step 6: Final answer
    x = 155,353.64

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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.