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Finding the Fourth Proportional to 397,874.09, 549,066.30 and 216,587.39

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Solution

The fourth proportional to 397,874.09, 549,066.30 and 216,587.39 is: 298,890.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,874.09 : 549,066.30 = 216,587.39 : x
  2. Step 2: Convert to fraction form
    397,874.09/549,066.30 = 216,587.39/x
  3. Step 3: Cross multiply
    397,874.09x = 549,066.30 × 216,587.39
  4. Step 4: Simplify right side
    397,874.09x = 118,920,836,853.96
  5. Step 5: Solve for x
    x = 118,920,836,853.96/397,874.09
  6. Step 6: Final answer
    x = 298,890.63

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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.