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Finding the Fourth Proportional to 203,485.62, 280,804.92 and 112,840.14

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Solution

The fourth proportional to 203,485.62, 280,804.92 and 112,840.14 is: 155,716.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,485.62 : 280,804.92 = 112,840.14 : x
  2. Step 2: Convert to fraction form
    203,485.62/280,804.92 = 112,840.14/x
  3. Step 3: Cross multiply
    203,485.62x = 280,804.92 × 112,840.14
  4. Step 4: Simplify right side
    203,485.62x = 31,686,066,485.49
  5. Step 5: Solve for x
    x = 31,686,066,485.49/203,485.62
  6. Step 6: Final answer
    x = 155,716.49

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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.