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Finding the Fourth Proportional to 201,992.40, 302,729.40 and 155,012.40

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Solution

The fourth proportional to 201,992.40, 302,729.40 and 155,012.40 is: 232,319.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,992.40 : 302,729.40 = 155,012.40 : x
  2. Step 2: Convert to fraction form
    201,992.40/302,729.40 = 155,012.40/x
  3. Step 3: Cross multiply
    201,992.40x = 302,729.40 × 155,012.40
  4. Step 4: Simplify right side
    201,992.40x = 46,926,810,844.56
  5. Step 5: Solve for x
    x = 46,926,810,844.56/201,992.40
  6. Step 6: Final answer
    x = 232,319.69

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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.