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Finding the Fourth Proportional to 339,668.40, 509,551.20 and 103,029.60

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Solution

The fourth proportional to 339,668.40, 509,551.20 and 103,029.60 is: 154,559.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,668.40 : 509,551.20 = 103,029.60 : x
  2. Step 2: Convert to fraction form
    339,668.40/509,551.20 = 103,029.60/x
  3. Step 3: Cross multiply
    339,668.40x = 509,551.20 × 103,029.60
  4. Step 4: Simplify right side
    339,668.40x = 52,498,856,315.52
  5. Step 5: Solve for x
    x = 52,498,856,315.52/339,668.40
  6. Step 6: Final answer
    x = 154,559.14

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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.