Home / 236,410.74-326,235.42-128,974.38

Finding the Fourth Proportional to 236,410.74, 326,235.42 and 128,974.38

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Solution

The fourth proportional to 236,410.74, 326,235.42 and 128,974.38 is: 177,978.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,410.74 : 326,235.42 = 128,974.38 : x
  2. Step 2: Convert to fraction form
    236,410.74/326,235.42 = 128,974.38/x
  3. Step 3: Cross multiply
    236,410.74x = 326,235.42 × 128,974.38
  4. Step 4: Simplify right side
    236,410.74x = 42,076,011,028.54
  5. Step 5: Solve for x
    x = 42,076,011,028.54/236,410.74
  6. Step 6: Final answer
    x = 177,978.42

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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.