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Finding the Fourth Proportional to 281,813.42, 388,893.48 and 154,486.28

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Solution

The fourth proportional to 281,813.42, 388,893.48 and 154,486.28 is: 213,186.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,813.42 : 388,893.48 = 154,486.28 : x
  2. Step 2: Convert to fraction form
    281,813.42/388,893.48 = 154,486.28/x
  3. Step 3: Cross multiply
    281,813.42x = 388,893.48 × 154,486.28
  4. Step 4: Simplify right side
    281,813.42x = 60,078,707,041.45
  5. Step 5: Solve for x
    x = 60,078,707,041.45/281,813.42
  6. Step 6: Final answer
    x = 213,186.11

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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.