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Finding the Fourth Proportional to 253,709.12, 380,093.88 and 127,201.70

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Solution

The fourth proportional to 253,709.12, 380,093.88 and 127,201.70 is: 190,567.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,709.12 : 380,093.88 = 127,201.70 : x
  2. Step 2: Convert to fraction form
    253,709.12/380,093.88 = 127,201.70/x
  3. Step 3: Cross multiply
    253,709.12x = 380,093.88 × 127,201.70
  4. Step 4: Simplify right side
    253,709.12x = 48,348,589,122.84
  5. Step 5: Solve for x
    x = 48,348,589,122.84/253,709.12
  6. Step 6: Final answer
    x = 190,567.01

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1.5x scale

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.