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Finding the Fourth Proportional to 436,836.75, 655,254.59 and 137,343.48

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Solution

The fourth proportional to 436,836.75, 655,254.59 and 137,343.48 is: 206,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,836.75 : 655,254.59 = 137,343.48 : x
  2. Step 2: Convert to fraction form
    436,836.75/655,254.59 = 137,343.48/x
  3. Step 3: Cross multiply
    436,836.75x = 655,254.59 × 137,343.48
  4. Step 4: Simplify right side
    436,836.75x = 89,994,944,989.86
  5. Step 5: Solve for x
    x = 89,994,944,989.86/436,836.75
  6. Step 6: Final answer
    x = 206,015.05

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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.