Home / 439,128.32-605,989.12-248,137.60

Finding the Fourth Proportional to 439,128.32, 605,989.12 and 248,137.60

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Solution

The fourth proportional to 439,128.32, 605,989.12 and 248,137.60 is: 342,425.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,128.32 : 605,989.12 = 248,137.60 : x
  2. Step 2: Convert to fraction form
    439,128.32/605,989.12 = 248,137.60/x
  3. Step 3: Cross multiply
    439,128.32x = 605,989.12 × 248,137.60
  4. Step 4: Simplify right side
    439,128.32x = 150,368,685,862.91
  5. Step 5: Solve for x
    x = 150,368,685,862.91/439,128.32
  6. Step 6: Final answer
    x = 342,425.39

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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.