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Finding the Fourth Proportional to 216,583, 324,241 and 126,349.80

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Solution

The fourth proportional to 216,583, 324,241 and 126,349.80 is: 189,155.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,583 : 324,241 = 126,349.80 : x
  2. Step 2: Convert to fraction form
    216,583/324,241 = 126,349.80/x
  3. Step 3: Cross multiply
    216,583x = 324,241 × 126,349.80
  4. Step 4: Simplify right side
    216,583x = 40,967,785,501.80
  5. Step 5: Solve for x
    x = 40,967,785,501.80/216,583
  6. Step 6: Final answer
    x = 189,155.13

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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.