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Finding the Third Proportional to 199,121.50 and 429,909.50

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Solution

The third proportional to 199,121.50 and 429,909.50 is: 928,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,121.50 : 429,909.50 = 429,909.50 : x
  2. Step 2: Convert to fraction form
    199,121.50/429,909.50 = 429,909.50/x
  3. Step 3: Cross multiply
    199,121.50x = 429,909.50 × 429,909.50
  4. Step 4: Simplify right side
    199,121.50x = 184,822,178,190.25
  5. Step 5: Solve for x
    x = 184,822,178,190.25/199,121.50
  6. Step 6: Final answer
    x = 928,187.96

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.