Home / 283,739.56-391,563.21-156,419.71

Finding the Fourth Proportional to 283,739.56, 391,563.21 and 156,419.71

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Solution

The fourth proportional to 283,739.56, 391,563.21 and 156,419.71 is: 215,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,739.56 : 391,563.21 = 156,419.71 : x
  2. Step 2: Convert to fraction form
    283,739.56/391,563.21 = 156,419.71/x
  3. Step 3: Cross multiply
    283,739.56x = 391,563.21 × 156,419.71
  4. Step 4: Simplify right side
    283,739.56x = 61,248,203,362.54
  5. Step 5: Solve for x
    x = 61,248,203,362.54/283,739.56
  6. Step 6: Final answer
    x = 215,860.64

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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.