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Finding the Fourth Proportional to 281,793.63, 388,891.13 and 167,140.16

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Solution

The fourth proportional to 281,793.63, 388,891.13 and 167,140.16 is: 230,662.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,793.63 : 388,891.13 = 167,140.16 : x
  2. Step 2: Convert to fraction form
    281,793.63/388,891.13 = 167,140.16/x
  3. Step 3: Cross multiply
    281,793.63x = 388,891.13 × 167,140.16
  4. Step 4: Simplify right side
    281,793.63x = 64,999,324,368.97
  5. Step 5: Solve for x
    x = 64,999,324,368.97/281,793.63
  6. Step 6: Final answer
    x = 230,662.86

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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.