Home / 258,195.30-387,143.95-100,239.22

Finding the Fourth Proportional to 258,195.30, 387,143.95 and 100,239.22

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Solution

The fourth proportional to 258,195.30, 387,143.95 and 100,239.22 is: 150,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,195.30 : 387,143.95 = 100,239.22 : x
  2. Step 2: Convert to fraction form
    258,195.30/387,143.95 = 100,239.22/x
  3. Step 3: Cross multiply
    258,195.30x = 387,143.95 × 100,239.22
  4. Step 4: Simplify right side
    258,195.30x = 38,807,007,575.72
  5. Step 5: Solve for x
    x = 38,807,007,575.72/258,195.30
  6. Step 6: Final answer
    x = 150,300.98

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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.