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Finding the Third Proportional to 130,659 and 286,213.50

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Solution

The third proportional to 130,659 and 286,213.50 is: 626,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,659 : 286,213.50 = 286,213.50 : x
  2. Step 2: Convert to fraction form
    130,659/286,213.50 = 286,213.50/x
  3. Step 3: Cross multiply
    130,659x = 286,213.50 × 286,213.50
  4. Step 4: Simplify right side
    130,659x = 81,918,167,582.25
  5. Step 5: Solve for x
    x = 81,918,167,582.25/130,659
  6. Step 6: Final answer
    x = 626,961.54

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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.