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Finding the Fourth Proportional to 388,958.63, 536,910.53 and 261,708.03

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Solution

The fourth proportional to 388,958.63, 536,910.53 and 261,708.03 is: 361,256.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,958.63 : 536,910.53 = 261,708.03 : x
  2. Step 2: Convert to fraction form
    388,958.63/536,910.53 = 261,708.03/x
  3. Step 3: Cross multiply
    388,958.63x = 536,910.53 × 261,708.03
  4. Step 4: Simplify right side
    388,958.63x = 140,513,795,784.02
  5. Step 5: Solve for x
    x = 140,513,795,784.02/388,958.63
  6. Step 6: Final answer
    x = 361,256.41

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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.