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Finding the Fourth Proportional to 213,369.49, 320,255.12 and 108,263.89

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Solution

The fourth proportional to 213,369.49, 320,255.12 and 108,263.89 is: 162,497.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,369.49 : 320,255.12 = 108,263.89 : x
  2. Step 2: Convert to fraction form
    213,369.49/320,255.12 = 108,263.89/x
  3. Step 3: Cross multiply
    213,369.49x = 320,255.12 × 108,263.89
  4. Step 4: Simplify right side
    213,369.49x = 34,672,065,083.62
  5. Step 5: Solve for x
    x = 34,672,065,083.62/213,369.49
  6. Step 6: Final answer
    x = 162,497.76

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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.