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Finding the Fourth Proportional to 312,076.32, 430,668.44 and 168,839.43

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Solution

The fourth proportional to 312,076.32, 430,668.44 and 168,839.43 is: 233,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,076.32 : 430,668.44 = 168,839.43 : x
  2. Step 2: Convert to fraction form
    312,076.32/430,668.44 = 168,839.43/x
  3. Step 3: Cross multiply
    312,076.32x = 430,668.44 × 168,839.43
  4. Step 4: Simplify right side
    312,076.32x = 72,713,813,084.39
  5. Step 5: Solve for x
    x = 72,713,813,084.39/312,076.32
  6. Step 6: Final answer
    x = 233,000.10

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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.