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Finding the Fourth Proportional to 325,782.90, 488,333.34 and 136,351.80

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Solution

The fourth proportional to 325,782.90, 488,333.34 and 136,351.80 is: 204,384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,782.90 : 488,333.34 = 136,351.80 : x
  2. Step 2: Convert to fraction form
    325,782.90/488,333.34 = 136,351.80/x
  3. Step 3: Cross multiply
    325,782.90x = 488,333.34 × 136,351.80
  4. Step 4: Simplify right side
    325,782.90x = 66,585,129,909.01
  5. Step 5: Solve for x
    x = 66,585,129,909.01/325,782.90
  6. Step 6: Final answer
    x = 204,384.98

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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.