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Finding the Fourth Proportional to 491,250, 677,920.21 and 273,455.22

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Solution

The fourth proportional to 491,250, 677,920.21 and 273,455.22 is: 377,365.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,250 : 677,920.21 = 273,455.22 : x
  2. Step 2: Convert to fraction form
    491,250/677,920.21 = 273,455.22/x
  3. Step 3: Cross multiply
    491,250x = 677,920.21 × 273,455.22
  4. Step 4: Simplify right side
    491,250x = 185,380,820,168.00
  5. Step 5: Solve for x
    x = 185,380,820,168.00/491,250
  6. Step 6: Final answer
    x = 377,365.54

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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.