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Finding the Fourth Proportional to 281,236.86, 421,899.17 and 91,653.12

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Solution

The fourth proportional to 281,236.86, 421,899.17 and 91,653.12 is: 137,493.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,236.86 : 421,899.17 = 91,653.12 : x
  2. Step 2: Convert to fraction form
    281,236.86/421,899.17 = 91,653.12/x
  3. Step 3: Cross multiply
    281,236.86x = 421,899.17 × 91,653.12
  4. Step 4: Simplify right side
    281,236.86x = 38,668,374,797.64
  5. Step 5: Solve for x
    x = 38,668,374,797.64/281,236.86
  6. Step 6: Final answer
    x = 137,493.98

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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.