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Finding the Fourth Proportional to 395,564.72, 545,879.94 and 234,498.92

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Solution

The fourth proportional to 395,564.72, 545,879.94 and 234,498.92 is: 323,608.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,564.72 : 545,879.94 = 234,498.92 : x
  2. Step 2: Convert to fraction form
    395,564.72/545,879.94 = 234,498.92/x
  3. Step 3: Cross multiply
    395,564.72x = 545,879.94 × 234,498.92
  4. Step 4: Simplify right side
    395,564.72x = 128,008,256,379.67
  5. Step 5: Solve for x
    x = 128,008,256,379.67/395,564.72
  6. Step 6: Final answer
    x = 323,608.88

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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.