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Finding the Third Proportional to 221,985 and 360,659.50

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Solution

The third proportional to 221,985 and 360,659.50 is: 585,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,985 : 360,659.50 = 360,659.50 : x
  2. Step 2: Convert to fraction form
    221,985/360,659.50 = 360,659.50/x
  3. Step 3: Cross multiply
    221,985x = 360,659.50 × 360,659.50
  4. Step 4: Simplify right side
    221,985x = 130,075,274,940.25
  5. Step 5: Solve for x
    x = 130,075,274,940.25/221,985
  6. Step 6: Final answer
    x = 585,964.25

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.