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Finding the Fourth Proportional to 436,967.84, 655,581.36 and 137,489.78

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Solution

The fourth proportional to 436,967.84, 655,581.36 and 137,489.78 is: 206,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,967.84 : 655,581.36 = 137,489.78 : x
  2. Step 2: Convert to fraction form
    436,967.84/655,581.36 = 137,489.78/x
  3. Step 3: Cross multiply
    436,967.84x = 655,581.36 × 137,489.78
  4. Step 4: Simplify right side
    436,967.84x = 90,135,736,958.50
  5. Step 5: Solve for x
    x = 90,135,736,958.50/436,967.84
  6. Step 6: Final answer
    x = 206,275.45

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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.