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Finding the Third Proportional to 143,815.50 and 214,903.13

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Solution

The third proportional to 143,815.50 and 214,903.13 is: 321,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,815.50 : 214,903.13 = 214,903.13 : x
  2. Step 2: Convert to fraction form
    143,815.50/214,903.13 = 214,903.13/x
  3. Step 3: Cross multiply
    143,815.50x = 214,903.13 × 214,903.13
  4. Step 4: Simplify right side
    143,815.50x = 46,183,353,134.77
  5. Step 5: Solve for x
    x = 46,183,353,134.77/143,815.50
  6. Step 6: Final answer
    x = 321,129.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.