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Finding the Fourth Proportional to 303,486.55, 418,811.46 and 167,520.54

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Solution

The fourth proportional to 303,486.55, 418,811.46 and 167,520.54 is: 231,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,486.55 : 418,811.46 = 167,520.54 : x
  2. Step 2: Convert to fraction form
    303,486.55/418,811.46 = 167,520.54/x
  3. Step 3: Cross multiply
    303,486.55x = 418,811.46 × 167,520.54
  4. Step 4: Simplify right side
    303,486.55x = 70,159,521,937.39
  5. Step 5: Solve for x
    x = 70,159,521,937.39/303,486.55
  6. Step 6: Final answer
    x = 231,178.36

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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.