Home / 283,414.19-391,103.59-154,349.75

Finding the Fourth Proportional to 283,414.19, 391,103.59 and 154,349.75

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Solution

The fourth proportional to 283,414.19, 391,103.59 and 154,349.75 is: 212,998.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,414.19 : 391,103.59 = 154,349.75 : x
  2. Step 2: Convert to fraction form
    283,414.19/391,103.59 = 154,349.75/x
  3. Step 3: Cross multiply
    283,414.19x = 391,103.59 × 154,349.75
  4. Step 4: Simplify right side
    283,414.19x = 60,366,742,221.89
  5. Step 5: Solve for x
    x = 60,366,742,221.89/283,414.19
  6. Step 6: Final answer
    x = 212,998.31

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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.