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Finding the Fourth Proportional to 201,619.98, 302,365.62 and 66,659.04

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Solution

The fourth proportional to 201,619.98, 302,365.62 and 66,659.04 is: 99,967.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,619.98 : 302,365.62 = 66,659.04 : x
  2. Step 2: Convert to fraction form
    201,619.98/302,365.62 = 66,659.04/x
  3. Step 3: Cross multiply
    201,619.98x = 302,365.62 × 66,659.04
  4. Step 4: Simplify right side
    201,619.98x = 20,155,401,958.20
  5. Step 5: Solve for x
    x = 20,155,401,958.20/201,619.98
  6. Step 6: Final answer
    x = 99,967.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.