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Finding the Fourth Proportional to 219,384.60, 329,008.80 and 79,125

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Solution

The fourth proportional to 219,384.60, 329,008.80 and 79,125 is: 118,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,384.60 : 329,008.80 = 79,125 : x
  2. Step 2: Convert to fraction form
    219,384.60/329,008.80 = 79,125/x
  3. Step 3: Cross multiply
    219,384.60x = 329,008.80 × 79,125
  4. Step 4: Simplify right side
    219,384.60x = 26,032,821,300
  5. Step 5: Solve for x
    x = 26,032,821,300/219,384.60
  6. Step 6: Final answer
    x = 118,662.94

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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.