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Finding the Third Proportional to 128,368.50 and 264,937.50

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Solution

The third proportional to 128,368.50 and 264,937.50 is: 546,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,368.50 : 264,937.50 = 264,937.50 : x
  2. Step 2: Convert to fraction form
    128,368.50/264,937.50 = 264,937.50/x
  3. Step 3: Cross multiply
    128,368.50x = 264,937.50 × 264,937.50
  4. Step 4: Simplify right side
    128,368.50x = 70,191,878,906.25
  5. Step 5: Solve for x
    x = 70,191,878,906.25/128,368.50
  6. Step 6: Final answer
    x = 546,799.87

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.