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Finding the Fourth Proportional to 383,909.51, 575,864.21 and 131,192.19

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Solution

The fourth proportional to 383,909.51, 575,864.21 and 131,192.19 is: 196,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,909.51 : 575,864.21 = 131,192.19 : x
  2. Step 2: Convert to fraction form
    383,909.51/575,864.21 = 131,192.19/x
  3. Step 3: Cross multiply
    383,909.51x = 575,864.21 × 131,192.19
  4. Step 4: Simplify right side
    383,909.51x = 75,548,887,180.50
  5. Step 5: Solve for x
    x = 75,548,887,180.50/383,909.51
  6. Step 6: Final answer
    x = 196,788.27

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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.