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Finding the Fourth Proportional to 388,855.41, 585,383.85 and 349,750.86

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Solution

The fourth proportional to 388,855.41, 585,383.85 and 349,750.86 is: 526,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,855.41 : 585,383.85 = 349,750.86 : x
  2. Step 2: Convert to fraction form
    388,855.41/585,383.85 = 349,750.86/x
  3. Step 3: Cross multiply
    388,855.41x = 585,383.85 × 349,750.86
  4. Step 4: Simplify right side
    388,855.41x = 204,738,504,967.61
  5. Step 5: Solve for x
    x = 204,738,504,967.61/388,855.41
  6. Step 6: Final answer
    x = 526,515.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.