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Finding the Fourth Proportional to 351,657.64, 485,258.64 and 198,709.12

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Solution

The fourth proportional to 351,657.64, 485,258.64 and 198,709.12 is: 274,202.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,657.64 : 485,258.64 = 198,709.12 : x
  2. Step 2: Convert to fraction form
    351,657.64/485,258.64 = 198,709.12/x
  3. Step 3: Cross multiply
    351,657.64x = 485,258.64 × 198,709.12
  4. Step 4: Simplify right side
    351,657.64x = 96,425,317,326.80
  5. Step 5: Solve for x
    x = 96,425,317,326.80/351,657.64
  6. Step 6: Final answer
    x = 274,202.25

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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.