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Finding the Fourth Proportional to 303,630, 419,009.40 and 169,494

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Solution

The fourth proportional to 303,630, 419,009.40 and 169,494 is: 233,901.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,630 : 419,009.40 = 169,494 : x
  2. Step 2: Convert to fraction form
    303,630/419,009.40 = 169,494/x
  3. Step 3: Cross multiply
    303,630x = 419,009.40 × 169,494
  4. Step 4: Simplify right side
    303,630x = 71,019,579,243.60
  5. Step 5: Solve for x
    x = 71,019,579,243.60/303,630
  6. Step 6: Final answer
    x = 233,901.72

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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.