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Finding the Fourth Proportional to 329,794,609.60, 494,565,943.20 and 99,687,217.60

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Solution

The fourth proportional to 329,794,609.60, 494,565,943.20 and 99,687,217.60 is: 149,492,749.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,794,609.60 : 494,565,943.20 = 99,687,217.60 : x
  2. Step 2: Convert to fraction form
    329,794,609.60/494,565,943.20 = 99,687,217.60/x
  3. Step 3: Cross multiply
    329,794,609.60x = 494,565,943.20 × 99,687,217.60
  4. Step 4: Simplify right side
    329,794,609.60x = 49,301,902,797,327,640
  5. Step 5: Solve for x
    x = 49,301,902,797,327,640/329,794,609.60
  6. Step 6: Final answer
    x = 149,492,749.01

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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.