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Finding the Fourth Proportional to 281,375.40, 388,297.86 and 154,050.96

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Solution

The fourth proportional to 281,375.40, 388,297.86 and 154,050.96 is: 212,590.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,375.40 : 388,297.86 = 154,050.96 : x
  2. Step 2: Convert to fraction form
    281,375.40/388,297.86 = 154,050.96/x
  3. Step 3: Cross multiply
    281,375.40x = 388,297.86 × 154,050.96
  4. Step 4: Simplify right side
    281,375.40x = 59,817,658,098.95
  5. Step 5: Solve for x
    x = 59,817,658,098.95/281,375.40
  6. Step 6: Final answer
    x = 212,590.22

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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.