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Finding the Fourth Proportional to 281,657.55, 422,480.32 and 68,426.46

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Solution

The fourth proportional to 281,657.55, 422,480.32 and 68,426.46 is: 102,638.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,657.55 : 422,480.32 = 68,426.46 : x
  2. Step 2: Convert to fraction form
    281,657.55/422,480.32 = 68,426.46/x
  3. Step 3: Cross multiply
    281,657.55x = 422,480.32 × 68,426.46
  4. Step 4: Simplify right side
    281,657.55x = 28,908,832,717.27
  5. Step 5: Solve for x
    x = 28,908,832,717.27/281,657.55
  6. Step 6: Final answer
    x = 102,638.23

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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.