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Finding the Fourth Proportional to 397,892.22, 549,074.46 and 216,600.39

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Solution

The fourth proportional to 397,892.22, 549,074.46 and 216,600.39 is: 298,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,892.22 : 549,074.46 = 216,600.39 : x
  2. Step 2: Convert to fraction form
    397,892.22/549,074.46 = 216,600.39/x
  3. Step 3: Cross multiply
    397,892.22x = 549,074.46 × 216,600.39
  4. Step 4: Simplify right side
    397,892.22x = 118,929,742,175.04
  5. Step 5: Solve for x
    x = 118,929,742,175.04/397,892.22
  6. Step 6: Final answer
    x = 298,899.39

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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.