Home / 315,984.96-436,054.32-172,741.68

Finding the Fourth Proportional to 315,984.96, 436,054.32 and 172,741.68

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Solution

The fourth proportional to 315,984.96, 436,054.32 and 172,741.68 is: 238,380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,984.96 : 436,054.32 = 172,741.68 : x
  2. Step 2: Convert to fraction form
    315,984.96/436,054.32 = 172,741.68/x
  3. Step 3: Cross multiply
    315,984.96x = 436,054.32 × 172,741.68
  4. Step 4: Simplify right side
    315,984.96x = 75,324,755,808.06
  5. Step 5: Solve for x
    x = 75,324,755,808.06/315,984.96
  6. Step 6: Final answer
    x = 238,380.83

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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.