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Finding the Fourth Proportional to 353,539.44, 487,745.01 and 261,882

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Solution

The fourth proportional to 353,539.44, 487,745.01 and 261,882 is: 361,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,539.44 : 487,745.01 = 261,882 : x
  2. Step 2: Convert to fraction form
    353,539.44/487,745.01 = 261,882/x
  3. Step 3: Cross multiply
    353,539.44x = 487,745.01 × 261,882
  4. Step 4: Simplify right side
    353,539.44x = 127,731,638,708.82
  5. Step 5: Solve for x
    x = 127,731,638,708.82/353,539.44
  6. Step 6: Final answer
    x = 361,293.89

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1.5x scale

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.