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Finding the Fourth Proportional to 329,074.75, 493,612.13 and 79,756.75

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Solution

The fourth proportional to 329,074.75, 493,612.13 and 79,756.75 is: 119,635.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,074.75 : 493,612.13 = 79,756.75 : x
  2. Step 2: Convert to fraction form
    329,074.75/493,612.13 = 79,756.75/x
  3. Step 3: Cross multiply
    329,074.75x = 493,612.13 × 79,756.75
  4. Step 4: Simplify right side
    329,074.75x = 39,368,900,483.41
  5. Step 5: Solve for x
    x = 39,368,900,483.41/329,074.75
  6. Step 6: Final answer
    x = 119,635.13

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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.