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Finding the Fourth Proportional to 259,390.40, 389,085.60 and 248,331.20

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Solution

The fourth proportional to 259,390.40, 389,085.60 and 248,331.20 is: 372,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,390.40 : 389,085.60 = 248,331.20 : x
  2. Step 2: Convert to fraction form
    259,390.40/389,085.60 = 248,331.20/x
  3. Step 3: Cross multiply
    259,390.40x = 389,085.60 × 248,331.20
  4. Step 4: Simplify right side
    259,390.40x = 96,622,093,950.72
  5. Step 5: Solve for x
    x = 96,622,093,950.72/259,390.40
  6. Step 6: Final answer
    x = 372,496.80

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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.