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Finding the Fourth Proportional to 397,884.54, 549,079.11 and 216,606.54

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Solution

The fourth proportional to 397,884.54, 549,079.11 and 216,606.54 is: 298,916.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,884.54 : 549,079.11 = 216,606.54 : x
  2. Step 2: Convert to fraction form
    397,884.54/549,079.11 = 216,606.54/x
  3. Step 3: Cross multiply
    397,884.54x = 549,079.11 × 216,606.54
  4. Step 4: Simplify right side
    397,884.54x = 118,934,126,203.38
  5. Step 5: Solve for x
    x = 118,934,126,203.38/397,884.54
  6. Step 6: Final answer
    x = 298,916.18

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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.