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Finding the Fourth Proportional to 220,841.40, 331,607.70 and 127,529.40

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Solution

The fourth proportional to 220,841.40, 331,607.70 and 127,529.40 is: 191,493.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,841.40 : 331,607.70 = 127,529.40 : x
  2. Step 2: Convert to fraction form
    220,841.40/331,607.70 = 127,529.40/x
  3. Step 3: Cross multiply
    220,841.40x = 331,607.70 × 127,529.40
  4. Step 4: Simplify right side
    220,841.40x = 42,289,731,016.38
  5. Step 5: Solve for x
    x = 42,289,731,016.38/220,841.40
  6. Step 6: Final answer
    x = 191,493.67

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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.