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Finding the Fourth Proportional to 281,702.08, 388,758.83 and 154,377.69

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Solution

The fourth proportional to 281,702.08, 388,758.83 and 154,377.69 is: 213,046.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,702.08 : 388,758.83 = 154,377.69 : x
  2. Step 2: Convert to fraction form
    281,702.08/388,758.83 = 154,377.69/x
  3. Step 3: Cross multiply
    281,702.08x = 388,758.83 × 154,377.69
  4. Step 4: Simplify right side
    281,702.08x = 60,015,690,142.50
  5. Step 5: Solve for x
    x = 60,015,690,142.50/281,702.08
  6. Step 6: Final answer
    x = 213,046.67

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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.