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Finding the Fourth Proportional to 201,813.80, 302,504.70 and 68,570.60

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Solution

The fourth proportional to 201,813.80, 302,504.70 and 68,570.60 is: 102,782.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,813.80 : 302,504.70 = 68,570.60 : x
  2. Step 2: Convert to fraction form
    201,813.80/302,504.70 = 68,570.60/x
  3. Step 3: Cross multiply
    201,813.80x = 302,504.70 × 68,570.60
  4. Step 4: Simplify right side
    201,813.80x = 20,742,928,781.82
  5. Step 5: Solve for x
    x = 20,742,928,781.82/201,813.80
  6. Step 6: Final answer
    x = 102,782.51

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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.