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Finding the Fourth Proportional to 201,703.20, 302,619.60 and 135,218.40

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Solution

The fourth proportional to 201,703.20, 302,619.60 and 135,218.40 is: 202,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,703.20 : 302,619.60 = 135,218.40 : x
  2. Step 2: Convert to fraction form
    201,703.20/302,619.60 = 135,218.40/x
  3. Step 3: Cross multiply
    201,703.20x = 302,619.60 × 135,218.40
  4. Step 4: Simplify right side
    201,703.20x = 40,919,738,120.64
  5. Step 5: Solve for x
    x = 40,919,738,120.64/201,703.20
  6. Step 6: Final answer
    x = 202,871.04

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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.