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Finding the Fourth Proportional to 395,384.27, 545,670.57 and 285,093.64

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Solution

The fourth proportional to 395,384.27, 545,670.57 and 285,093.64 is: 393,458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,384.27 : 545,670.57 = 285,093.64 : x
  2. Step 2: Convert to fraction form
    395,384.27/545,670.57 = 285,093.64/x
  3. Step 3: Cross multiply
    395,384.27x = 545,670.57 × 285,093.64
  4. Step 4: Simplify right side
    395,384.27x = 155,567,210,793.36
  5. Step 5: Solve for x
    x = 155,567,210,793.36/395,384.27
  6. Step 6: Final answer
    x = 393,458.27

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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.