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Finding the Fourth Proportional to 329,466.53, 494,012.55 and 129,678.64

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Solution

The fourth proportional to 329,466.53, 494,012.55 and 129,678.64 is: 194,444.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,466.53 : 494,012.55 = 129,678.64 : x
  2. Step 2: Convert to fraction form
    329,466.53/494,012.55 = 129,678.64/x
  3. Step 3: Cross multiply
    329,466.53x = 494,012.55 × 129,678.64
  4. Step 4: Simplify right side
    329,466.53x = 64,062,875,626.93
  5. Step 5: Solve for x
    x = 64,062,875,626.93/329,466.53
  6. Step 6: Final answer
    x = 194,444.26

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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.