Home / 145,480.81-218,221.20-40,299.78

Finding the Fourth Proportional to 145,480.81, 218,221.20 and 40,299.78

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Solution

The fourth proportional to 145,480.81, 218,221.20 and 40,299.78 is: 60,449.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,480.81 : 218,221.20 = 40,299.78 : x
  2. Step 2: Convert to fraction form
    145,480.81/218,221.20 = 40,299.78/x
  3. Step 3: Cross multiply
    145,480.81x = 218,221.20 × 40,299.78
  4. Step 4: Simplify right side
    145,480.81x = 8,794,266,351.34
  5. Step 5: Solve for x
    x = 8,794,266,351.34/145,480.81
  6. Step 6: Final answer
    x = 60,449.67

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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.