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Finding the Fourth Proportional to 397,863.36, 549,076.32 and 219,015.36

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Solution

The fourth proportional to 397,863.36, 549,076.32 and 219,015.36 is: 302,254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,863.36 : 549,076.32 = 219,015.36 : x
  2. Step 2: Convert to fraction form
    397,863.36/549,076.32 = 219,015.36/x
  3. Step 3: Cross multiply
    397,863.36x = 549,076.32 × 219,015.36
  4. Step 4: Simplify right side
    397,863.36x = 120,256,147,892.28
  5. Step 5: Solve for x
    x = 120,256,147,892.28/397,863.36
  6. Step 6: Final answer
    x = 302,254.89

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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.