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Finding the Fourth Proportional to 479,705.88, 718,771.44 and 163,990.56

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Solution

The fourth proportional to 479,705.88, 718,771.44 and 163,990.56 is: 245,716.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,705.88 : 718,771.44 = 163,990.56 : x
  2. Step 2: Convert to fraction form
    479,705.88/718,771.44 = 163,990.56/x
  3. Step 3: Cross multiply
    479,705.88x = 718,771.44 × 163,990.56
  4. Step 4: Simplify right side
    479,705.88x = 117,871,730,957.61
  5. Step 5: Solve for x
    x = 117,871,730,957.61/479,705.88
  6. Step 6: Final answer
    x = 245,716.67

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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.