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Finding the Fourth Proportional to 281,655.07, 422,482.90 and 71,293

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Solution

The fourth proportional to 281,655.07, 422,482.90 and 71,293 is: 106,939.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,655.07 : 422,482.90 = 71,293 : x
  2. Step 2: Convert to fraction form
    281,655.07/422,482.90 = 71,293/x
  3. Step 3: Cross multiply
    281,655.07x = 422,482.90 × 71,293
  4. Step 4: Simplify right side
    281,655.07x = 30,120,073,389.70
  5. Step 5: Solve for x
    x = 30,120,073,389.70/281,655.07
  6. Step 6: Final answer
    x = 106,939.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.