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Finding the Fourth Proportional to 356,963.16, 492,604.56 and 203,999.60

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Solution

The fourth proportional to 356,963.16, 492,604.56 and 203,999.60 is: 281,516.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,963.16 : 492,604.56 = 203,999.60 : x
  2. Step 2: Convert to fraction form
    356,963.16/492,604.56 = 203,999.60/x
  3. Step 3: Cross multiply
    356,963.16x = 492,604.56 × 203,999.60
  4. Step 4: Simplify right side
    356,963.16x = 100,491,130,735.15
  5. Step 5: Solve for x
    x = 100,491,130,735.15/356,963.16
  6. Step 6: Final answer
    x = 281,516.81

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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.