Home / 316,289.44-436,659.87-209,170.18

Finding the Fourth Proportional to 316,289.44, 436,659.87 and 209,170.18

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Solution

The fourth proportional to 316,289.44, 436,659.87 and 209,170.18 is: 288,774.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,289.44 : 436,659.87 = 209,170.18 : x
  2. Step 2: Convert to fraction form
    316,289.44/436,659.87 = 209,170.18/x
  3. Step 3: Cross multiply
    316,289.44x = 436,659.87 × 209,170.18
  4. Step 4: Simplify right side
    316,289.44x = 91,336,223,606.68
  5. Step 5: Solve for x
    x = 91,336,223,606.68/316,289.44
  6. Step 6: Final answer
    x = 288,774.18

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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.