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Finding the Fourth Proportional to 303,156.48, 454,734.40 and 81,540.48

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Solution

The fourth proportional to 303,156.48, 454,734.40 and 81,540.48 is: 122,310.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,156.48 : 454,734.40 = 81,540.48 : x
  2. Step 2: Convert to fraction form
    303,156.48/454,734.40 = 81,540.48/x
  3. Step 3: Cross multiply
    303,156.48x = 454,734.40 × 81,540.48
  4. Step 4: Simplify right side
    303,156.48x = 37,079,261,248.51
  5. Step 5: Solve for x
    x = 37,079,261,248.51/303,156.48
  6. Step 6: Final answer
    x = 122,310.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.