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Finding the Fourth Proportional to 143,705.28, 215,656.44 and 50,211

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Solution

The fourth proportional to 143,705.28, 215,656.44 and 50,211 is: 75,350.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,705.28 : 215,656.44 = 50,211 : x
  2. Step 2: Convert to fraction form
    143,705.28/215,656.44 = 50,211/x
  3. Step 3: Cross multiply
    143,705.28x = 215,656.44 × 50,211
  4. Step 4: Simplify right side
    143,705.28x = 10,828,325,508.84
  5. Step 5: Solve for x
    x = 10,828,325,508.84/143,705.28
  6. Step 6: Final answer
    x = 75,350.92

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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.