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Finding the Fourth Proportional to 281,841.72, 388,941.48 and 154,514.58

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Solution

The fourth proportional to 281,841.72, 388,941.48 and 154,514.58 is: 213,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,841.72 : 388,941.48 = 154,514.58 : x
  2. Step 2: Convert to fraction form
    281,841.72/388,941.48 = 154,514.58/x
  3. Step 3: Cross multiply
    281,841.72x = 388,941.48 × 154,514.58
  4. Step 4: Simplify right side
    281,841.72x = 60,097,129,426.78
  5. Step 5: Solve for x
    x = 60,097,129,426.78/281,841.72
  6. Step 6: Final answer
    x = 213,230.07

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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.