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Finding the Fourth Proportional to 201,679.90, 302,519.85 and 68,710.30

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Solution

The fourth proportional to 201,679.90, 302,519.85 and 68,710.30 is: 103,065.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,679.90 : 302,519.85 = 68,710.30 : x
  2. Step 2: Convert to fraction form
    201,679.90/302,519.85 = 68,710.30/x
  3. Step 3: Cross multiply
    201,679.90x = 302,519.85 × 68,710.30
  4. Step 4: Simplify right side
    201,679.90x = 20,786,229,649.46
  5. Step 5: Solve for x
    x = 20,786,229,649.46/201,679.90
  6. Step 6: Final answer
    x = 103,065.45

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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.