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Finding the Fourth Proportional to 397,883.25, 549,078.87 and 216,596.49

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Solution

The fourth proportional to 397,883.25, 549,078.87 and 216,596.49 is: 298,903.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,883.25 : 549,078.87 = 216,596.49 : x
  2. Step 2: Convert to fraction form
    397,883.25/549,078.87 = 216,596.49/x
  3. Step 3: Cross multiply
    397,883.25x = 549,078.87 × 216,596.49
  4. Step 4: Simplify right side
    397,883.25x = 118,928,557,827.60
  5. Step 5: Solve for x
    x = 118,928,557,827.60/397,883.25
  6. Step 6: Final answer
    x = 298,903.16

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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.