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Finding the Fourth Proportional to 395,756.36, 545,953.62 and 259,735.88

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Solution

The fourth proportional to 395,756.36, 545,953.62 and 259,735.88 is: 358,310.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,756.36 : 545,953.62 = 259,735.88 : x
  2. Step 2: Convert to fraction form
    395,756.36/545,953.62 = 259,735.88/x
  3. Step 3: Cross multiply
    395,756.36x = 545,953.62 × 259,735.88
  4. Step 4: Simplify right side
    395,756.36x = 141,803,743,929.89
  5. Step 5: Solve for x
    x = 141,803,743,929.89/395,756.36
  6. Step 6: Final answer
    x = 358,310.71

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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.