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Finding the Fourth Proportional to 298,701.40, 448,131.30 and 130,149.40

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Solution

The fourth proportional to 298,701.40, 448,131.30 and 130,149.40 is: 195,258.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,701.40 : 448,131.30 = 130,149.40 : x
  2. Step 2: Convert to fraction form
    298,701.40/448,131.30 = 130,149.40/x
  3. Step 3: Cross multiply
    298,701.40x = 448,131.30 × 130,149.40
  4. Step 4: Simplify right side
    298,701.40x = 58,324,019,816.22
  5. Step 5: Solve for x
    x = 58,324,019,816.22/298,701.40
  6. Step 6: Final answer
    x = 195,258.61

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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.