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Finding the Fourth Proportional to 281,444.70, 421,245.45 and 218,775.90

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Solution

The fourth proportional to 281,444.70, 421,245.45 and 218,775.90 is: 327,447.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,444.70 : 421,245.45 = 218,775.90 : x
  2. Step 2: Convert to fraction form
    281,444.70/421,245.45 = 218,775.90/x
  3. Step 3: Cross multiply
    281,444.70x = 421,245.45 × 218,775.90
  4. Step 4: Simplify right side
    281,444.70x = 92,158,352,444.66
  5. Step 5: Solve for x
    x = 92,158,352,444.66/281,444.70
  6. Step 6: Final answer
    x = 327,447.46

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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.