Home / 258,100.21-387,150.32-100,365.57

Finding the Fourth Proportional to 258,100.21, 387,150.32 and 100,365.57

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Solution

The fourth proportional to 258,100.21, 387,150.32 and 100,365.57 is: 150,548.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,100.21 : 387,150.32 = 100,365.57 : x
  2. Step 2: Convert to fraction form
    258,100.21/387,150.32 = 100,365.57/x
  3. Step 3: Cross multiply
    258,100.21x = 387,150.32 × 100,365.57
  4. Step 4: Simplify right side
    258,100.21x = 38,856,562,417.03
  5. Step 5: Solve for x
    x = 38,856,562,417.03/258,100.21
  6. Step 6: Final answer
    x = 150,548.36

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1.5x scale

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.