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Finding the Fourth Proportional to 201,888.90, 302,833.35 and 68,919.30

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Solution

The fourth proportional to 201,888.90, 302,833.35 and 68,919.30 is: 103,378.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,888.90 : 302,833.35 = 68,919.30 : x
  2. Step 2: Convert to fraction form
    201,888.90/302,833.35 = 68,919.30/x
  3. Step 3: Cross multiply
    201,888.90x = 302,833.35 × 68,919.30
  4. Step 4: Simplify right side
    201,888.90x = 20,871,062,498.66
  5. Step 5: Solve for x
    x = 20,871,062,498.66/201,888.90
  6. Step 6: Final answer
    x = 103,378.95

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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.