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Finding the Fourth Proportional to 397,853.89, 549,045.36 and 216,571.03

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Solution

The fourth proportional to 397,853.89, 549,045.36 and 216,571.03 is: 298,871.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,853.89 : 549,045.36 = 216,571.03 : x
  2. Step 2: Convert to fraction form
    397,853.89/549,045.36 = 216,571.03/x
  3. Step 3: Cross multiply
    397,853.89x = 549,045.36 × 216,571.03
  4. Step 4: Simplify right side
    397,853.89x = 118,907,319,131.92
  5. Step 5: Solve for x
    x = 118,907,319,131.92/397,853.89
  6. Step 6: Final answer
    x = 298,871.83

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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.