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Finding the Fourth Proportional to 397,885.50, 549,086.64 and 216,600.60

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Solution

The fourth proportional to 397,885.50, 549,086.64 and 216,600.60 is: 298,911.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,885.50 : 549,086.64 = 216,600.60 : x
  2. Step 2: Convert to fraction form
    397,885.50/549,086.64 = 216,600.60/x
  3. Step 3: Cross multiply
    397,885.50x = 549,086.64 × 216,600.60
  4. Step 4: Simplify right side
    397,885.50x = 118,932,495,675.98
  5. Step 5: Solve for x
    x = 118,932,495,675.98/397,885.50
  6. Step 6: Final answer
    x = 298,911.36

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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.