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Finding the Fourth Proportional to 329,083.20, 493,624.78 and 79,765.20

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Solution

The fourth proportional to 329,083.20, 493,624.78 and 79,765.20 is: 119,647.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,083.20 : 493,624.78 = 79,765.20 : x
  2. Step 2: Convert to fraction form
    329,083.20/493,624.78 = 79,765.20/x
  3. Step 3: Cross multiply
    329,083.20x = 493,624.78 × 79,765.20
  4. Step 4: Simplify right side
    329,083.20x = 39,374,079,301.66
  5. Step 5: Solve for x
    x = 39,374,079,301.66/329,083.20
  6. Step 6: Final answer
    x = 119,647.80

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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.