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Finding the Fourth Proportional to 353,029.67, 487,415.55 and 271,212.21

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Solution

The fourth proportional to 353,029.67, 487,415.55 and 271,212.21 is: 374,453.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,029.67 : 487,415.55 = 271,212.21 : x
  2. Step 2: Convert to fraction form
    353,029.67/487,415.55 = 271,212.21/x
  3. Step 3: Cross multiply
    353,029.67x = 487,415.55 × 271,212.21
  4. Step 4: Simplify right side
    353,029.67x = 132,193,044,710.73
  5. Step 5: Solve for x
    x = 132,193,044,710.73/353,029.67
  6. Step 6: Final answer
    x = 374,453.08

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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.