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Finding the Fourth Proportional to 329,005.75, 493,511.10 and 79,687.75

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Solution

The fourth proportional to 329,005.75, 493,511.10 and 79,687.75 is: 119,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,005.75 : 493,511.10 = 79,687.75 : x
  2. Step 2: Convert to fraction form
    329,005.75/493,511.10 = 79,687.75/x
  3. Step 3: Cross multiply
    329,005.75x = 493,511.10 × 79,687.75
  4. Step 4: Simplify right side
    329,005.75x = 39,326,789,159.03
  5. Step 5: Solve for x
    x = 39,326,789,159.03/329,005.75
  6. Step 6: Final answer
    x = 119,532.22

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1.5x scale

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.