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Finding the Fourth Proportional to 281,702.58, 388,759.52 and 154,378.19

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Solution

The fourth proportional to 281,702.58, 388,759.52 and 154,378.19 is: 213,047.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,702.58 : 388,759.52 = 154,378.19 : x
  2. Step 2: Convert to fraction form
    281,702.58/388,759.52 = 154,378.19/x
  3. Step 3: Cross multiply
    281,702.58x = 388,759.52 × 154,378.19
  4. Step 4: Simplify right side
    281,702.58x = 60,015,989,485.02
  5. Step 5: Solve for x
    x = 60,015,989,485.02/281,702.58
  6. Step 6: Final answer
    x = 213,047.35

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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.