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Finding the Fourth Proportional to 383,542.49, 575,321.94 and 99,239.18

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Solution

The fourth proportional to 383,542.49, 575,321.94 and 99,239.18 is: 148,860.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,542.49 : 575,321.94 = 99,239.18 : x
  2. Step 2: Convert to fraction form
    383,542.49/575,321.94 = 99,239.18/x
  3. Step 3: Cross multiply
    383,542.49x = 575,321.94 × 99,239.18
  4. Step 4: Simplify right side
    383,542.49x = 57,094,474,685.00
  5. Step 5: Solve for x
    x = 57,094,474,685.00/383,542.49
  6. Step 6: Final answer
    x = 148,860.88

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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.