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Finding the Fourth Proportional to 281,321.40, 388,268.74 and 160,502.11

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Solution

The fourth proportional to 281,321.40, 388,268.74 and 160,502.11 is: 221,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,321.40 : 388,268.74 = 160,502.11 : x
  2. Step 2: Convert to fraction form
    281,321.40/388,268.74 = 160,502.11/x
  3. Step 3: Cross multiply
    281,321.40x = 388,268.74 × 160,502.11
  4. Step 4: Simplify right side
    281,321.40x = 62,317,951,247.00
  5. Step 5: Solve for x
    x = 62,317,951,247.00/281,321.40
  6. Step 6: Final answer
    x = 221,518.70

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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.