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Finding the Fourth Proportional to 203,450.50, 280,765.07 and 112,810.29

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Solution

The fourth proportional to 203,450.50, 280,765.07 and 112,810.29 is: 155,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,450.50 : 280,765.07 = 112,810.29 : x
  2. Step 2: Convert to fraction form
    203,450.50/280,765.07 = 112,810.29/x
  3. Step 3: Cross multiply
    203,450.50x = 280,765.07 × 112,810.29
  4. Step 4: Simplify right side
    203,450.50x = 31,673,188,968.57
  5. Step 5: Solve for x
    x = 31,673,188,968.57/203,450.50
  6. Step 6: Final answer
    x = 155,680.07

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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.