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Finding the Fourth Proportional to 402,383.51, 603,668.75 and 118,062.58

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Solution

The fourth proportional to 402,383.51, 603,668.75 and 118,062.58 is: 177,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,383.51 : 603,668.75 = 118,062.58 : x
  2. Step 2: Convert to fraction form
    402,383.51/603,668.75 = 118,062.58/x
  3. Step 3: Cross multiply
    402,383.51x = 603,668.75 × 118,062.58
  4. Step 4: Simplify right side
    402,383.51x = 71,270,687,990.89
  5. Step 5: Solve for x
    x = 71,270,687,990.89/402,383.51
  6. Step 6: Final answer
    x = 177,121.29

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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.