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Finding the Fourth Proportional to 281,617.80, 422,426.70 and 262,955.40

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Solution

The fourth proportional to 281,617.80, 422,426.70 and 262,955.40 is: 394,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,617.80 : 422,426.70 = 262,955.40 : x
  2. Step 2: Convert to fraction form
    281,617.80/422,426.70 = 262,955.40/x
  3. Step 3: Cross multiply
    281,617.80x = 422,426.70 × 262,955.40
  4. Step 4: Simplify right side
    281,617.80x = 111,079,381,869.18
  5. Step 5: Solve for x
    x = 111,079,381,869.18/281,617.80
  6. Step 6: Final answer
    x = 394,433.10

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1.5x scale

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.