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Finding the Fourth Proportional to 508,278.80, 762,720.60 and 192,767.60

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Solution

The fourth proportional to 508,278.80, 762,720.60 and 192,767.60 is: 289,266.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,278.80 : 762,720.60 = 192,767.60 : x
  2. Step 2: Convert to fraction form
    508,278.80/762,720.60 = 192,767.60/x
  3. Step 3: Cross multiply
    508,278.80x = 762,720.60 × 192,767.60
  4. Step 4: Simplify right side
    508,278.80x = 147,027,819,532.56
  5. Step 5: Solve for x
    x = 147,027,819,532.56/508,278.80
  6. Step 6: Final answer
    x = 289,266.09

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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.