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Finding the Fourth Proportional to 379,606.50, 523,909.62 and 218,458.62

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Solution

The fourth proportional to 379,606.50, 523,909.62 and 218,458.62 is: 301,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,606.50 : 523,909.62 = 218,458.62 : x
  2. Step 2: Convert to fraction form
    379,606.50/523,909.62 = 218,458.62/x
  3. Step 3: Cross multiply
    379,606.50x = 523,909.62 × 218,458.62
  4. Step 4: Simplify right side
    379,606.50x = 114,452,572,589.92
  5. Step 5: Solve for x
    x = 114,452,572,589.92/379,606.50
  6. Step 6: Final answer
    x = 301,503.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.