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Finding the Fourth Proportional to 201,846.50, 278,548.18 and 112,422.50

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Solution

The fourth proportional to 201,846.50, 278,548.18 and 112,422.50 is: 155,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,846.50 : 278,548.18 = 112,422.50 : x
  2. Step 2: Convert to fraction form
    201,846.50/278,548.18 = 112,422.50/x
  3. Step 3: Cross multiply
    201,846.50x = 278,548.18 × 112,422.50
  4. Step 4: Simplify right side
    201,846.50x = 31,315,082,766.05
  5. Step 5: Solve for x
    x = 31,315,082,766.05/201,846.50
  6. Step 6: Final answer
    x = 155,143.06

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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.