Home / 258,950.80-387,843-132,629.68

Finding the Fourth Proportional to 258,950.80, 387,843 and 132,629.68

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Solution

The fourth proportional to 258,950.80, 387,843 and 132,629.68 is: 198,645.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,950.80 : 387,843 = 132,629.68 : x
  2. Step 2: Convert to fraction form
    258,950.80/387,843 = 132,629.68/x
  3. Step 3: Cross multiply
    258,950.80x = 387,843 × 132,629.68
  4. Step 4: Simplify right side
    258,950.80x = 51,439,492,980.24
  5. Step 5: Solve for x
    x = 51,439,492,980.24/258,950.80
  6. Step 6: Final answer
    x = 198,645.82

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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.