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Finding the Fourth Proportional to 219,453.20, 329,179.80 and 156,989.20

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Solution

The fourth proportional to 219,453.20, 329,179.80 and 156,989.20 is: 235,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,453.20 : 329,179.80 = 156,989.20 : x
  2. Step 2: Convert to fraction form
    219,453.20/329,179.80 = 156,989.20/x
  3. Step 3: Cross multiply
    219,453.20x = 329,179.80 × 156,989.20
  4. Step 4: Simplify right side
    219,453.20x = 51,677,673,458.16
  5. Step 5: Solve for x
    x = 51,677,673,458.16/219,453.20
  6. Step 6: Final answer
    x = 235,483.80

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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.