Home / 258,535.41-387,803.23-81,056.26

Finding the Fourth Proportional to 258,535.41, 387,803.23 and 81,056.26

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Solution

The fourth proportional to 258,535.41, 387,803.23 and 81,056.26 is: 121,584.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,535.41 : 387,803.23 = 81,056.26 : x
  2. Step 2: Convert to fraction form
    258,535.41/387,803.23 = 81,056.26/x
  3. Step 3: Cross multiply
    258,535.41x = 387,803.23 × 81,056.26
  4. Step 4: Simplify right side
    258,535.41x = 31,433,879,237.08
  5. Step 5: Solve for x
    x = 31,433,879,237.08/258,535.41
  6. Step 6: Final answer
    x = 121,584.43

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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.