Home / 318,945.51-478,427.49-82,288.19

Finding the Fourth Proportional to 318,945.51, 478,427.49 and 82,288.19

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Solution

The fourth proportional to 318,945.51, 478,427.49 and 82,288.19 is: 123,434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,945.51 : 478,427.49 = 82,288.19 : x
  2. Step 2: Convert to fraction form
    318,945.51/478,427.49 = 82,288.19/x
  3. Step 3: Cross multiply
    318,945.51x = 478,427.49 × 82,288.19
  4. Step 4: Simplify right side
    318,945.51x = 39,368,932,198.34
  5. Step 5: Solve for x
    x = 39,368,932,198.34/318,945.51
  6. Step 6: Final answer
    x = 123,434.67

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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.