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Finding the Fourth Proportional to 281,860.56, 388,912.80 and 167,118

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Solution

The fourth proportional to 281,860.56, 388,912.80 and 167,118 is: 230,590.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,860.56 : 388,912.80 = 167,118 : x
  2. Step 2: Convert to fraction form
    281,860.56/388,912.80 = 167,118/x
  3. Step 3: Cross multiply
    281,860.56x = 388,912.80 × 167,118
  4. Step 4: Simplify right side
    281,860.56x = 64,994,329,310.40
  5. Step 5: Solve for x
    x = 64,994,329,310.40/281,860.56
  6. Step 6: Final answer
    x = 230,590.36

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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.