Home / 315,839.32-435,718.26-188,440.84

Finding the Fourth Proportional to 315,839.32, 435,718.26 and 188,440.84

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Solution

The fourth proportional to 315,839.32, 435,718.26 and 188,440.84 is: 259,964.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,839.32 : 435,718.26 = 188,440.84 : x
  2. Step 2: Convert to fraction form
    315,839.32/435,718.26 = 188,440.84/x
  3. Step 3: Cross multiply
    315,839.32x = 435,718.26 × 188,440.84
  4. Step 4: Simplify right side
    315,839.32x = 82,107,114,917.74
  5. Step 5: Solve for x
    x = 82,107,114,917.74/315,839.32
  6. Step 6: Final answer
    x = 259,964.83

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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.