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Finding the Fourth Proportional to 486,794.40, 730,136.24 and 131,836.08

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Solution

The fourth proportional to 486,794.40, 730,136.24 and 131,836.08 is: 197,739.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,794.40 : 730,136.24 = 131,836.08 : x
  2. Step 2: Convert to fraction form
    486,794.40/730,136.24 = 131,836.08/x
  3. Step 3: Cross multiply
    486,794.40x = 730,136.24 × 131,836.08
  4. Step 4: Simplify right side
    486,794.40x = 96,258,299,747.54
  5. Step 5: Solve for x
    x = 96,258,299,747.54/486,794.40
  6. Step 6: Final answer
    x = 197,739.13

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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.