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Finding the Fourth Proportional to 331,658.58, 457,690.35 and 188,426.49

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Solution

The fourth proportional to 331,658.58, 457,690.35 and 188,426.49 is: 260,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,658.58 : 457,690.35 = 188,426.49 : x
  2. Step 2: Convert to fraction form
    331,658.58/457,690.35 = 188,426.49/x
  3. Step 3: Cross multiply
    331,658.58x = 457,690.35 × 188,426.49
  4. Step 4: Simplify right side
    331,658.58x = 86,240,986,157.37
  5. Step 5: Solve for x
    x = 86,240,986,157.37/331,658.58
  6. Step 6: Final answer
    x = 260,029.41

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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.