Home / 309,815.96-427,544.85-173,849.60

Finding the Fourth Proportional to 309,815.96, 427,544.85 and 173,849.60

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Solution

The fourth proportional to 309,815.96, 427,544.85 and 173,849.60 is: 239,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,815.96 : 427,544.85 = 173,849.60 : x
  2. Step 2: Convert to fraction form
    309,815.96/427,544.85 = 173,849.60/x
  3. Step 3: Cross multiply
    309,815.96x = 427,544.85 × 173,849.60
  4. Step 4: Simplify right side
    309,815.96x = 74,328,499,016.84
  5. Step 5: Solve for x
    x = 74,328,499,016.84/309,815.96
  6. Step 6: Final answer
    x = 239,911.79

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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.