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Finding the Fourth Proportional to 329,466.83, 494,012.93 and 129,678.91

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Solution

The fourth proportional to 329,466.83, 494,012.93 and 129,678.91 is: 194,444.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,466.83 : 494,012.93 = 129,678.91 : x
  2. Step 2: Convert to fraction form
    329,466.83/494,012.93 = 129,678.91/x
  3. Step 3: Cross multiply
    329,466.83x = 494,012.93 × 129,678.91
  4. Step 4: Simplify right side
    329,466.83x = 64,063,056,404.88
  5. Step 5: Solve for x
    x = 64,063,056,404.88/329,466.83
  6. Step 6: Final answer
    x = 194,444.63

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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.