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Finding the Fourth Proportional to 219,849.60, 329,385.60 and 186,412.80

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Solution

The fourth proportional to 219,849.60, 329,385.60 and 186,412.80 is: 279,289.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,849.60 : 329,385.60 = 186,412.80 : x
  2. Step 2: Convert to fraction form
    219,849.60/329,385.60 = 186,412.80/x
  3. Step 3: Cross multiply
    219,849.60x = 329,385.60 × 186,412.80
  4. Step 4: Simplify right side
    219,849.60x = 61,401,691,975.68
  5. Step 5: Solve for x
    x = 61,401,691,975.68/219,849.60
  6. Step 6: Final answer
    x = 279,289.53

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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.