Home / 215,286.31-297,063.50-129,227.05

Finding the Fourth Proportional to 215,286.31, 297,063.50 and 129,227.05

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Solution

The fourth proportional to 215,286.31, 297,063.50 and 129,227.05 is: 178,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,286.31 : 297,063.50 = 129,227.05 : x
  2. Step 2: Convert to fraction form
    215,286.31/297,063.50 = 129,227.05/x
  3. Step 3: Cross multiply
    215,286.31x = 297,063.50 × 129,227.05
  4. Step 4: Simplify right side
    215,286.31x = 38,388,638,282.36
  5. Step 5: Solve for x
    x = 38,388,638,282.36/215,286.31
  6. Step 6: Final answer
    x = 178,314.35

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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.