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Finding the Fourth Proportional to 499,987.34, 750,074.40 and 200,491.35

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Solution

The fourth proportional to 499,987.34, 750,074.40 and 200,491.35 is: 300,774.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,987.34 : 750,074.40 = 200,491.35 : x
  2. Step 2: Convert to fraction form
    499,987.34/750,074.40 = 200,491.35/x
  3. Step 3: Cross multiply
    499,987.34x = 750,074.40 × 200,491.35
  4. Step 4: Simplify right side
    499,987.34x = 150,383,431,869.22
  5. Step 5: Solve for x
    x = 150,383,431,869.22/499,987.34
  6. Step 6: Final answer
    x = 300,774.48

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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.