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Finding the Fourth Proportional to 245,369.63, 338,615.43 and 149,928.95

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Solution

The fourth proportional to 245,369.63, 338,615.43 and 149,928.95 is: 206,905.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,369.63 : 338,615.43 = 149,928.95 : x
  2. Step 2: Convert to fraction form
    245,369.63/338,615.43 = 149,928.95/x
  3. Step 3: Cross multiply
    245,369.63x = 338,615.43 × 149,928.95
  4. Step 4: Simplify right side
    245,369.63x = 50,768,255,873.70
  5. Step 5: Solve for x
    x = 50,768,255,873.70/245,369.63
  6. Step 6: Final answer
    x = 206,905.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.