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Finding the Fourth Proportional to 383,998.65, 575,997.99 and 103,515.90

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Solution

The fourth proportional to 383,998.65, 575,997.99 and 103,515.90 is: 155,273.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,998.65 : 575,997.99 = 103,515.90 : x
  2. Step 2: Convert to fraction form
    383,998.65/575,997.99 = 103,515.90/x
  3. Step 3: Cross multiply
    383,998.65x = 575,997.99 × 103,515.90
  4. Step 4: Simplify right side
    383,998.65x = 59,624,950,333.04
  5. Step 5: Solve for x
    x = 59,624,950,333.04/383,998.65
  6. Step 6: Final answer
    x = 155,273.85

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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.