Home / 203,220.39-280,436.67-112,580.31

Finding the Fourth Proportional to 203,220.39, 280,436.67 and 112,580.31

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Solution

The fourth proportional to 203,220.39, 280,436.67 and 112,580.31 is: 155,356.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,220.39 : 280,436.67 = 112,580.31 : x
  2. Step 2: Convert to fraction form
    203,220.39/280,436.67 = 112,580.31/x
  3. Step 3: Cross multiply
    203,220.39x = 280,436.67 × 112,580.31
  4. Step 4: Simplify right side
    203,220.39x = 31,571,647,243.97
  5. Step 5: Solve for x
    x = 31,571,647,243.97/203,220.39
  6. Step 6: Final answer
    x = 155,356.69

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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.