Home / 213,231.48-320,040.68-113,475.66

Finding the Fourth Proportional to 213,231.48, 320,040.68 and 113,475.66

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Solution

The fourth proportional to 213,231.48, 320,040.68 and 113,475.66 is: 170,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,231.48 : 320,040.68 = 113,475.66 : x
  2. Step 2: Convert to fraction form
    213,231.48/320,040.68 = 113,475.66/x
  3. Step 3: Cross multiply
    213,231.48x = 320,040.68 × 113,475.66
  4. Step 4: Simplify right side
    213,231.48x = 36,316,827,389.85
  5. Step 5: Solve for x
    x = 36,316,827,389.85/213,231.48
  6. Step 6: Final answer
    x = 170,316.44

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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.