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Finding the Third Proportional to 219,011.50 and 478,620.50

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Solution

The third proportional to 219,011.50 and 478,620.50 is: 1,045,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,011.50 : 478,620.50 = 478,620.50 : x
  2. Step 2: Convert to fraction form
    219,011.50/478,620.50 = 478,620.50/x
  3. Step 3: Cross multiply
    219,011.50x = 478,620.50 × 478,620.50
  4. Step 4: Simplify right side
    219,011.50x = 229,077,583,020.25
  5. Step 5: Solve for x
    x = 229,077,583,020.25/219,011.50
  6. Step 6: Final answer
    x = 1,045,961.44

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.