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Finding the Fourth Proportional to 421,659.50, 632,450.05 and 118,081.13

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Solution

The fourth proportional to 421,659.50, 632,450.05 and 118,081.13 is: 177,110.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,659.50 : 632,450.05 = 118,081.13 : x
  2. Step 2: Convert to fraction form
    421,659.50/632,450.05 = 118,081.13/x
  3. Step 3: Cross multiply
    421,659.50x = 632,450.05 × 118,081.13
  4. Step 4: Simplify right side
    421,659.50x = 74,680,413,115.10
  5. Step 5: Solve for x
    x = 74,680,413,115.10/421,659.50
  6. Step 6: Final answer
    x = 177,110.71

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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.