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Finding the Fourth Proportional to 202,079.79, 278,863.70 and 111,439.58

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Solution

The fourth proportional to 202,079.79, 278,863.70 and 111,439.58 is: 153,783.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,079.79 : 278,863.70 = 111,439.58 : x
  2. Step 2: Convert to fraction form
    202,079.79/278,863.70 = 111,439.58/x
  3. Step 3: Cross multiply
    202,079.79x = 278,863.70 × 111,439.58
  4. Step 4: Simplify right side
    202,079.79x = 31,076,451,653.73
  5. Step 5: Solve for x
    x = 31,076,451,653.73/202,079.79
  6. Step 6: Final answer
    x = 153,783.08

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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.