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Finding the Third Proportional to 142,215.75 and 305,518.50

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Solution

The third proportional to 142,215.75 and 305,518.50 is: 656,337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,215.75 : 305,518.50 = 305,518.50 : x
  2. Step 2: Convert to fraction form
    142,215.75/305,518.50 = 305,518.50/x
  3. Step 3: Cross multiply
    142,215.75x = 305,518.50 × 305,518.50
  4. Step 4: Simplify right side
    142,215.75x = 93,341,553,842.25
  5. Step 5: Solve for x
    x = 93,341,553,842.25/142,215.75
  6. Step 6: Final answer
    x = 656,337.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.