Home / 215,450.57-297,334.05-129,435.86

Finding the Fourth Proportional to 215,450.57, 297,334.05 and 129,435.86

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Solution

The fourth proportional to 215,450.57, 297,334.05 and 129,435.86 is: 178,628.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,450.57 : 297,334.05 = 129,435.86 : x
  2. Step 2: Convert to fraction form
    215,450.57/297,334.05 = 129,435.86/x
  3. Step 3: Cross multiply
    215,450.57x = 297,334.05 × 129,435.86
  4. Step 4: Simplify right side
    215,450.57x = 38,485,688,469.03
  5. Step 5: Solve for x
    x = 38,485,688,469.03/215,450.57
  6. Step 6: Final answer
    x = 178,628.85

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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.