Home / 283,619.91-391,390.47-154,559.55

Finding the Fourth Proportional to 283,619.91, 391,390.47 and 154,559.55

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Solution

The fourth proportional to 283,619.91, 391,390.47 and 154,559.55 is: 213,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,619.91 : 391,390.47 = 154,559.55 : x
  2. Step 2: Convert to fraction form
    283,619.91/391,390.47 = 154,559.55/x
  3. Step 3: Cross multiply
    283,619.91x = 391,390.47 × 154,559.55
  4. Step 4: Simplify right side
    283,619.91x = 60,493,134,917.49
  5. Step 5: Solve for x
    x = 60,493,134,917.49/283,619.91
  6. Step 6: Final answer
    x = 213,289.45

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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.