Home / 258,604.22-387,076.63-138,360.38

Finding the Fourth Proportional to 258,604.22, 387,076.63 and 138,360.38

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Solution

The fourth proportional to 258,604.22, 387,076.63 and 138,360.38 is: 207,096.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,604.22 : 387,076.63 = 138,360.38 : x
  2. Step 2: Convert to fraction form
    258,604.22/387,076.63 = 138,360.38/x
  3. Step 3: Cross multiply
    258,604.22x = 387,076.63 × 138,360.38
  4. Step 4: Simplify right side
    258,604.22x = 53,556,069,615.92
  5. Step 5: Solve for x
    x = 53,556,069,615.92/258,604.22
  6. Step 6: Final answer
    x = 207,096.66

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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.