Home / 316,212.11-436,383.21-172,972.32

Finding the Fourth Proportional to 316,212.11, 436,383.21 and 172,972.32

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Solution

The fourth proportional to 316,212.11, 436,383.21 and 172,972.32 is: 238,707.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,212.11 : 436,383.21 = 172,972.32 : x
  2. Step 2: Convert to fraction form
    316,212.11/436,383.21 = 172,972.32/x
  3. Step 3: Cross multiply
    316,212.11x = 436,383.21 × 172,972.32
  4. Step 4: Simplify right side
    316,212.11x = 75,482,216,242.75
  5. Step 5: Solve for x
    x = 75,482,216,242.75/316,212.11
  6. Step 6: Final answer
    x = 238,707.54

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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.