Home / 318,243.03-477,328.91-81,591.27

Finding the Fourth Proportional to 318,243.03, 477,328.91 and 81,591.27

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Solution

The fourth proportional to 318,243.03, 477,328.91 and 81,591.27 is: 122,377.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,243.03 : 477,328.91 = 81,591.27 : x
  2. Step 2: Convert to fraction form
    318,243.03/477,328.91 = 81,591.27/x
  3. Step 3: Cross multiply
    318,243.03x = 477,328.91 × 81,591.27
  4. Step 4: Simplify right side
    318,243.03x = 38,945,871,566.66
  5. Step 5: Solve for x
    x = 38,945,871,566.66/318,243.03
  6. Step 6: Final answer
    x = 122,377.77

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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.