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Finding the Fourth Proportional to 491,686.77, 737,587.26 and 171,739.61

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Solution

The fourth proportional to 491,686.77, 737,587.26 and 171,739.61 is: 257,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,686.77 : 737,587.26 = 171,739.61 : x
  2. Step 2: Convert to fraction form
    491,686.77/737,587.26 = 171,739.61/x
  3. Step 3: Cross multiply
    491,686.77x = 737,587.26 × 171,739.61
  4. Step 4: Simplify right side
    491,686.77x = 126,672,948,373.37
  5. Step 5: Solve for x
    x = 126,672,948,373.37/491,686.77
  6. Step 6: Final answer
    x = 257,629.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.