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Finding the Fourth Proportional to 395,661.52, 545,813.82 and 259,676.60

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Solution

The fourth proportional to 395,661.52, 545,813.82 and 259,676.60 is: 358,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,661.52 : 545,813.82 = 259,676.60 : x
  2. Step 2: Convert to fraction form
    395,661.52/545,813.82 = 259,676.60/x
  3. Step 3: Cross multiply
    395,661.52x = 545,813.82 × 259,676.60
  4. Step 4: Simplify right side
    395,661.52x = 141,735,077,010.61
  5. Step 5: Solve for x
    x = 141,735,077,010.61/395,661.52
  6. Step 6: Final answer
    x = 358,223.05

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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.