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Finding the Fourth Proportional to 228,067.70, 342,003.09 and 87,728.18

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Solution

The fourth proportional to 228,067.70, 342,003.09 and 87,728.18 is: 131,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,067.70 : 342,003.09 = 87,728.18 : x
  2. Step 2: Convert to fraction form
    228,067.70/342,003.09 = 87,728.18/x
  3. Step 3: Cross multiply
    228,067.70x = 342,003.09 × 87,728.18
  4. Step 4: Simplify right side
    228,067.70x = 30,003,308,640.08
  5. Step 5: Solve for x
    x = 30,003,308,640.08/228,067.70
  6. Step 6: Final answer
    x = 131,554.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.