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Finding the Fourth Proportional to 303,998.40, 419,407.20 and 176,644.80

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Solution

The fourth proportional to 303,998.40, 419,407.20 and 176,644.80 is: 243,705.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,998.40 : 419,407.20 = 176,644.80 : x
  2. Step 2: Convert to fraction form
    303,998.40/419,407.20 = 176,644.80/x
  3. Step 3: Cross multiply
    303,998.40x = 419,407.20 × 176,644.80
  4. Step 4: Simplify right side
    303,998.40x = 74,086,100,962.56
  5. Step 5: Solve for x
    x = 74,086,100,962.56/303,998.40
  6. Step 6: Final answer
    x = 243,705.56

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1.5x scale

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.