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Finding the Fourth Proportional to 329,079.21, 493,618.82 and 79,761.21

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Solution

The fourth proportional to 329,079.21, 493,618.82 and 79,761.21 is: 119,641.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,079.21 : 493,618.82 = 79,761.21 : x
  2. Step 2: Convert to fraction form
    329,079.21/493,618.82 = 79,761.21/x
  3. Step 3: Cross multiply
    329,079.21x = 493,618.82 × 79,761.21
  4. Step 4: Simplify right side
    329,079.21x = 39,371,634,361.97
  5. Step 5: Solve for x
    x = 39,371,634,361.97/329,079.21
  6. Step 6: Final answer
    x = 119,641.82

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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.