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Finding the Fourth Proportional to 318,873.77, 440,029.17 and 198,012.46

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Solution

The fourth proportional to 318,873.77, 440,029.17 and 198,012.46 is: 273,246.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,873.77 : 440,029.17 = 198,012.46 : x
  2. Step 2: Convert to fraction form
    318,873.77/440,029.17 = 198,012.46/x
  3. Step 3: Cross multiply
    318,873.77x = 440,029.17 × 198,012.46
  4. Step 4: Simplify right side
    318,873.77x = 87,131,258,423.46
  5. Step 5: Solve for x
    x = 87,131,258,423.46/318,873.77
  6. Step 6: Final answer
    x = 273,246.87

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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.