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Finding the Fourth Proportional to 203,436.28, 280,741.96 and 112,792

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Solution

The fourth proportional to 203,436.28, 280,741.96 and 112,792 is: 155,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,436.28 : 280,741.96 = 112,792 : x
  2. Step 2: Convert to fraction form
    203,436.28/280,741.96 = 112,792/x
  3. Step 3: Cross multiply
    203,436.28x = 280,741.96 × 112,792
  4. Step 4: Simplify right side
    203,436.28x = 31,665,447,152.32
  5. Step 5: Solve for x
    x = 31,665,447,152.32/203,436.28
  6. Step 6: Final answer
    x = 155,652.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.