Home / 318,964.52-439,565.38-228,162.78

Finding the Fourth Proportional to 318,964.52, 439,565.38 and 228,162.78

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Solution

The fourth proportional to 318,964.52, 439,565.38 and 228,162.78 is: 314,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,964.52 : 439,565.38 = 228,162.78 : x
  2. Step 2: Convert to fraction form
    318,964.52/439,565.38 = 228,162.78/x
  3. Step 3: Cross multiply
    318,964.52x = 439,565.38 × 228,162.78
  4. Step 4: Simplify right side
    318,964.52x = 100,292,458,522.15
  5. Step 5: Solve for x
    x = 100,292,458,522.15/318,964.52
  6. Step 6: Final answer
    x = 314,431.40

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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.