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Finding the Fourth Proportional to 499,987.15, 750,074.12 and 200,491.17

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Solution

The fourth proportional to 499,987.15, 750,074.12 and 200,491.17 is: 300,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,987.15 : 750,074.12 = 200,491.17 : x
  2. Step 2: Convert to fraction form
    499,987.15/750,074.12 = 200,491.17/x
  3. Step 3: Cross multiply
    499,987.15x = 750,074.12 × 200,491.17
  4. Step 4: Simplify right side
    499,987.15x = 150,383,234,842.13
  5. Step 5: Solve for x
    x = 150,383,234,842.13/499,987.15
  6. Step 6: Final answer
    x = 300,774.20

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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.