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Finding the Fourth Proportional to 203,605.39, 280,965.96 and 112,960.39

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Solution

The fourth proportional to 203,605.39, 280,965.96 and 112,960.39 is: 155,880.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,605.39 : 280,965.96 = 112,960.39 : x
  2. Step 2: Convert to fraction form
    203,605.39/280,965.96 = 112,960.39/x
  3. Step 3: Cross multiply
    203,605.39x = 280,965.96 × 112,960.39
  4. Step 4: Simplify right side
    203,605.39x = 31,738,024,418.32
  5. Step 5: Solve for x
    x = 31,738,024,418.32/203,605.39
  6. Step 6: Final answer
    x = 155,880.08

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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.