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Finding the Fourth Proportional to 436,933.78, 655,404.99 and 137,407.66

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Solution

The fourth proportional to 436,933.78, 655,404.99 and 137,407.66 is: 206,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,933.78 : 655,404.99 = 137,407.66 : x
  2. Step 2: Convert to fraction form
    436,933.78/655,404.99 = 137,407.66/x
  3. Step 3: Cross multiply
    436,933.78x = 655,404.99 × 137,407.66
  4. Step 4: Simplify right side
    436,933.78x = 90,057,666,028.22
  5. Step 5: Solve for x
    x = 90,057,666,028.22/436,933.78
  6. Step 6: Final answer
    x = 206,112.85

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1.5x scale

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.