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Finding the Fourth Proportional to 281,478.90, 422,246.04 and 81,801.06

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Solution

The fourth proportional to 281,478.90, 422,246.04 and 81,801.06 is: 122,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,478.90 : 422,246.04 = 81,801.06 : x
  2. Step 2: Convert to fraction form
    281,478.90/422,246.04 = 81,801.06/x
  3. Step 3: Cross multiply
    281,478.90x = 422,246.04 × 81,801.06
  4. Step 4: Simplify right side
    281,478.90x = 34,540,173,652.80
  5. Step 5: Solve for x
    x = 34,540,173,652.80/281,478.90
  6. Step 6: Final answer
    x = 122,709.64

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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.