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Finding the Fourth Proportional to 416,678.50, 625,123.59 and 121,190.50

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Solution

The fourth proportional to 416,678.50, 625,123.59 and 121,190.50 is: 181,816.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,678.50 : 625,123.59 = 121,190.50 : x
  2. Step 2: Convert to fraction form
    416,678.50/625,123.59 = 121,190.50/x
  3. Step 3: Cross multiply
    416,678.50x = 625,123.59 × 121,190.50
  4. Step 4: Simplify right side
    416,678.50x = 75,759,040,433.90
  5. Step 5: Solve for x
    x = 75,759,040,433.90/416,678.50
  6. Step 6: Final answer
    x = 181,816.53

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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.