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Finding the Fourth Proportional to 143,856.40, 215,800.80 and 44,015.80

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Solution

The fourth proportional to 143,856.40, 215,800.80 and 44,015.80 is: 66,028.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,856.40 : 215,800.80 = 44,015.80 : x
  2. Step 2: Convert to fraction form
    143,856.40/215,800.80 = 44,015.80/x
  3. Step 3: Cross multiply
    143,856.40x = 215,800.80 × 44,015.80
  4. Step 4: Simplify right side
    143,856.40x = 9,498,644,852.64
  5. Step 5: Solve for x
    x = 9,498,644,852.64/143,856.40
  6. Step 6: Final answer
    x = 66,028.66

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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.