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Finding the Third Proportional to 130,662 and 286,220

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Solution

The third proportional to 130,662 and 286,220 is: 626,975.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,662 : 286,220 = 286,220 : x
  2. Step 2: Convert to fraction form
    130,662/286,220 = 286,220/x
  3. Step 3: Cross multiply
    130,662x = 286,220 × 286,220
  4. Step 4: Simplify right side
    130,662x = 81,921,888,400
  5. Step 5: Solve for x
    x = 81,921,888,400/130,662
  6. Step 6: Final answer
    x = 626,975.62

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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.