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Finding the Fourth Proportional to 281,754.95, 388,821.81 and 154,427.81

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Solution

The fourth proportional to 281,754.95, 388,821.81 and 154,427.81 is: 213,110.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,754.95 : 388,821.81 = 154,427.81 : x
  2. Step 2: Convert to fraction form
    281,754.95/388,821.81 = 154,427.81/x
  3. Step 3: Cross multiply
    281,754.95x = 388,821.81 × 154,427.81
  4. Step 4: Simplify right side
    281,754.95x = 60,044,898,654.43
  5. Step 5: Solve for x
    x = 60,044,898,654.43/281,754.95
  6. Step 6: Final answer
    x = 213,110.36

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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.