Home / 289,313.21-433,990.60-99,770.85

Finding the Fourth Proportional to 289,313.21, 433,990.60 and 99,770.85

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Solution

The fourth proportional to 289,313.21, 433,990.60 and 99,770.85 is: 149,663.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,313.21 : 433,990.60 = 99,770.85 : x
  2. Step 2: Convert to fraction form
    289,313.21/433,990.60 = 99,770.85/x
  3. Step 3: Cross multiply
    289,313.21x = 433,990.60 × 99,770.85
  4. Step 4: Simplify right side
    289,313.21x = 43,299,611,054.01
  5. Step 5: Solve for x
    x = 43,299,611,054.01/289,313.21
  6. Step 6: Final answer
    x = 149,663.44

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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.