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Finding the Fourth Proportional to 351,955.96, 485,662.88 and 215,995.64

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Solution

The fourth proportional to 351,955.96, 485,662.88 and 215,995.64 is: 298,051.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,955.96 : 485,662.88 = 215,995.64 : x
  2. Step 2: Convert to fraction form
    351,955.96/485,662.88 = 215,995.64/x
  3. Step 3: Cross multiply
    351,955.96x = 485,662.88 × 215,995.64
  4. Step 4: Simplify right side
    351,955.96x = 104,901,062,548.73
  5. Step 5: Solve for x
    x = 104,901,062,548.73/351,955.96
  6. Step 6: Final answer
    x = 298,051.67

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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.