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Finding the Fourth Proportional to 219,738.60, 329,607.90 and 148,879.80

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Solution

The fourth proportional to 219,738.60, 329,607.90 and 148,879.80 is: 223,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,738.60 : 329,607.90 = 148,879.80 : x
  2. Step 2: Convert to fraction form
    219,738.60/329,607.90 = 148,879.80/x
  3. Step 3: Cross multiply
    219,738.60x = 329,607.90 × 148,879.80
  4. Step 4: Simplify right side
    219,738.60x = 49,071,958,230.42
  5. Step 5: Solve for x
    x = 49,071,958,230.42/219,738.60
  6. Step 6: Final answer
    x = 223,319.70

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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.