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Finding the Fourth Proportional to 416,679.50, 625,125.09 and 121,191.50

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Solution

The fourth proportional to 416,679.50, 625,125.09 and 121,191.50 is: 181,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,679.50 : 625,125.09 = 121,191.50 : x
  2. Step 2: Convert to fraction form
    416,679.50/625,125.09 = 121,191.50/x
  3. Step 3: Cross multiply
    416,679.50x = 625,125.09 × 121,191.50
  4. Step 4: Simplify right side
    416,679.50x = 75,759,847,344.74
  5. Step 5: Solve for x
    x = 75,759,847,344.74/416,679.50
  6. Step 6: Final answer
    x = 181,818.03

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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.