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Finding the Fourth Proportional to 303,135, 418,339.32 and 168,999

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Solution

The fourth proportional to 303,135, 418,339.32 and 168,999 is: 233,225.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,135 : 418,339.32 = 168,999 : x
  2. Step 2: Convert to fraction form
    303,135/418,339.32 = 168,999/x
  3. Step 3: Cross multiply
    303,135x = 418,339.32 × 168,999
  4. Step 4: Simplify right side
    303,135x = 70,698,926,740.68
  5. Step 5: Solve for x
    x = 70,698,926,740.68/303,135
  6. Step 6: Final answer
    x = 233,225.88

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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.