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Finding the Third Proportional to 105,590.75 and 212,909.50

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Solution

The third proportional to 105,590.75 and 212,909.50 is: 429,303.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,590.75 : 212,909.50 = 212,909.50 : x
  2. Step 2: Convert to fraction form
    105,590.75/212,909.50 = 212,909.50/x
  3. Step 3: Cross multiply
    105,590.75x = 212,909.50 × 212,909.50
  4. Step 4: Simplify right side
    105,590.75x = 45,330,455,190.25
  5. Step 5: Solve for x
    x = 45,330,455,190.25/105,590.75
  6. Step 6: Final answer
    x = 429,303.28

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.