Home / 235,840.47-325,465.68-128,416.38

Finding the Fourth Proportional to 235,840.47, 325,465.68 and 128,416.38

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Solution

The fourth proportional to 235,840.47, 325,465.68 and 128,416.38 is: 177,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,840.47 : 325,465.68 = 128,416.38 : x
  2. Step 2: Convert to fraction form
    235,840.47/325,465.68 = 128,416.38/x
  3. Step 3: Cross multiply
    235,840.47x = 325,465.68 × 128,416.38
  4. Step 4: Simplify right side
    235,840.47x = 41,795,124,439.84
  5. Step 5: Solve for x
    x = 41,795,124,439.84/235,840.47
  6. Step 6: Final answer
    x = 177,217.78

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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.