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Finding the Fourth Proportional to 281,377.40, 388,300.62 and 154,052.96

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Solution

The fourth proportional to 281,377.40, 388,300.62 and 154,052.96 is: 212,592.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,377.40 : 388,300.62 = 154,052.96 : x
  2. Step 2: Convert to fraction form
    281,377.40/388,300.62 = 154,052.96/x
  3. Step 3: Cross multiply
    281,377.40x = 388,300.62 × 154,052.96
  4. Step 4: Simplify right side
    281,377.40x = 59,818,859,880.84
  5. Step 5: Solve for x
    x = 59,818,859,880.84/281,377.40
  6. Step 6: Final answer
    x = 212,592.98

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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.