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Finding the Fourth Proportional to 221,950.50, 306,303.96 and 126,438.90

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Solution

The fourth proportional to 221,950.50, 306,303.96 and 126,438.90 is: 174,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,950.50 : 306,303.96 = 126,438.90 : x
  2. Step 2: Convert to fraction form
    221,950.50/306,303.96 = 126,438.90/x
  3. Step 3: Cross multiply
    221,950.50x = 306,303.96 × 126,438.90
  4. Step 4: Simplify right side
    221,950.50x = 38,728,735,768.04
  5. Step 5: Solve for x
    x = 38,728,735,768.04/221,950.50
  6. Step 6: Final answer
    x = 174,492.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.