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Finding the Fourth Proportional to 281,771.04, 388,854 and 154,446.60

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Solution

The fourth proportional to 281,771.04, 388,854 and 154,446.60 is: 213,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,771.04 : 388,854 = 154,446.60 : x
  2. Step 2: Convert to fraction form
    281,771.04/388,854 = 154,446.60/x
  3. Step 3: Cross multiply
    281,771.04x = 388,854 × 154,446.60
  4. Step 4: Simplify right side
    281,771.04x = 60,057,178,196.40
  5. Step 5: Solve for x
    x = 60,057,178,196.40/281,771.04
  6. Step 6: Final answer
    x = 213,141.77

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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.