Home / 420,025.50-579,649.77-238,745.07

Finding the Fourth Proportional to 420,025.50, 579,649.77 and 238,745.07

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Solution

The fourth proportional to 420,025.50, 579,649.77 and 238,745.07 is: 329,476.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,025.50 : 579,649.77 = 238,745.07 : x
  2. Step 2: Convert to fraction form
    420,025.50/579,649.77 = 238,745.07/x
  3. Step 3: Cross multiply
    420,025.50x = 579,649.77 × 238,745.07
  4. Step 4: Simplify right side
    420,025.50x = 138,388,524,914.13
  5. Step 5: Solve for x
    x = 138,388,524,914.13/420,025.50
  6. Step 6: Final answer
    x = 329,476.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.