Home / 312,867.39-431,765.51-176,921.68

Finding the Fourth Proportional to 312,867.39, 431,765.51 and 176,921.68

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Solution

The fourth proportional to 312,867.39, 431,765.51 and 176,921.68 is: 244,156.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,867.39 : 431,765.51 = 176,921.68 : x
  2. Step 2: Convert to fraction form
    312,867.39/431,765.51 = 176,921.68/x
  3. Step 3: Cross multiply
    312,867.39x = 431,765.51 × 176,921.68
  4. Step 4: Simplify right side
    312,867.39x = 76,388,678,398.14
  5. Step 5: Solve for x
    x = 76,388,678,398.14/312,867.39
  6. Step 6: Final answer
    x = 244,156.73

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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.