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Finding the Fourth Proportional to 259,743.70, 388,959.45 and 207,255.70

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Solution

The fourth proportional to 259,743.70, 388,959.45 and 207,255.70 is: 310,360.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,743.70 : 388,959.45 = 207,255.70 : x
  2. Step 2: Convert to fraction form
    259,743.70/388,959.45 = 207,255.70/x
  3. Step 3: Cross multiply
    259,743.70x = 388,959.45 × 207,255.70
  4. Step 4: Simplify right side
    259,743.70x = 80,614,063,081.37
  5. Step 5: Solve for x
    x = 80,614,063,081.37/259,743.70
  6. Step 6: Final answer
    x = 310,360.03

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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.