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Finding the Fourth Proportional to 219,383.60, 329,007.30 and 79,124

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Solution

The fourth proportional to 219,383.60, 329,007.30 and 79,124 is: 118,661.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,383.60 : 329,007.30 = 79,124 : x
  2. Step 2: Convert to fraction form
    219,383.60/329,007.30 = 79,124/x
  3. Step 3: Cross multiply
    219,383.60x = 329,007.30 × 79,124
  4. Step 4: Simplify right side
    219,383.60x = 26,032,373,605.20
  5. Step 5: Solve for x
    x = 26,032,373,605.20/219,383.60
  6. Step 6: Final answer
    x = 118,661.44

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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.