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Finding the Fourth Proportional to 281,367.34, 388,286.93 and 154,042.93

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Solution

The fourth proportional to 281,367.34, 388,286.93 and 154,042.93 is: 212,579.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,367.34 : 388,286.93 = 154,042.93 : x
  2. Step 2: Convert to fraction form
    281,367.34/388,286.93 = 154,042.93/x
  3. Step 3: Cross multiply
    281,367.34x = 388,286.93 × 154,042.93
  4. Step 4: Simplify right side
    281,367.34x = 59,812,854,636.97
  5. Step 5: Solve for x
    x = 59,812,854,636.97/281,367.34
  6. Step 6: Final answer
    x = 212,579.24

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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.