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Finding the Fourth Proportional to 436,912.93, 655,392.74 and 137,416.85

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Solution

The fourth proportional to 436,912.93, 655,392.74 and 137,416.85 is: 206,132.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,912.93 : 655,392.74 = 137,416.85 : x
  2. Step 2: Convert to fraction form
    436,912.93/655,392.74 = 137,416.85/x
  3. Step 3: Cross multiply
    436,912.93x = 655,392.74 × 137,416.85
  4. Step 4: Simplify right side
    436,912.93x = 90,062,005,156.58
  5. Step 5: Solve for x
    x = 90,062,005,156.58/436,912.93
  6. Step 6: Final answer
    x = 206,132.62

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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.