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Finding the Fourth Proportional to 281,329.92, 388,235.94 and 154,013.70

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Solution

The fourth proportional to 281,329.92, 388,235.94 and 154,013.70 is: 212,539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,329.92 : 388,235.94 = 154,013.70 : x
  2. Step 2: Convert to fraction form
    281,329.92/388,235.94 = 154,013.70/x
  3. Step 3: Cross multiply
    281,329.92x = 388,235.94 × 154,013.70
  4. Step 4: Simplify right side
    281,329.92x = 59,793,653,592.38
  5. Step 5: Solve for x
    x = 59,793,653,592.38/281,329.92
  6. Step 6: Final answer
    x = 212,539.26

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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.