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Finding the Fourth Proportional to 281,740.57, 388,744.67 and 166,968.72

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Solution

The fourth proportional to 281,740.57, 388,744.67 and 166,968.72 is: 230,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,740.57 : 388,744.67 = 166,968.72 : x
  2. Step 2: Convert to fraction form
    281,740.57/388,744.67 = 166,968.72/x
  3. Step 3: Cross multiply
    281,740.57x = 388,744.67 × 166,968.72
  4. Step 4: Simplify right side
    281,740.57x = 64,908,200,374.14
  5. Step 5: Solve for x
    x = 64,908,200,374.14/281,740.57
  6. Step 6: Final answer
    x = 230,382.87

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1.5x scale

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.