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Finding the Fourth Proportional to 213,189.67, 319,755.33 and 63,453.07

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Solution

The fourth proportional to 213,189.67, 319,755.33 and 63,453.07 is: 95,170.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,189.67 : 319,755.33 = 63,453.07 : x
  2. Step 2: Convert to fraction form
    213,189.67/319,755.33 = 63,453.07/x
  3. Step 3: Cross multiply
    213,189.67x = 319,755.33 × 63,453.07
  4. Step 4: Simplify right side
    213,189.67x = 20,289,457,337.36
  5. Step 5: Solve for x
    x = 20,289,457,337.36/213,189.67
  6. Step 6: Final answer
    x = 95,170.92

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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.