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Finding the Fourth Proportional to 351,615.74, 485,205.74 and 198,660.35

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Solution

The fourth proportional to 351,615.74, 485,205.74 and 198,660.35 is: 274,137.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,615.74 : 485,205.74 = 198,660.35 : x
  2. Step 2: Convert to fraction form
    351,615.74/485,205.74 = 198,660.35/x
  3. Step 3: Cross multiply
    351,615.74x = 485,205.74 × 198,660.35
  4. Step 4: Simplify right side
    351,615.74x = 96,391,141,483.28
  5. Step 5: Solve for x
    x = 96,391,141,483.28/351,615.74
  6. Step 6: Final answer
    x = 274,137.74

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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.