Home / 215,450.33-297,333.71-129,435.62

Finding the Fourth Proportional to 215,450.33, 297,333.71 and 129,435.62

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Solution

The fourth proportional to 215,450.33, 297,333.71 and 129,435.62 is: 178,628.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,450.33 : 297,333.71 = 129,435.62 : x
  2. Step 2: Convert to fraction form
    215,450.33/297,333.71 = 129,435.62/x
  3. Step 3: Cross multiply
    215,450.33x = 297,333.71 × 129,435.62
  4. Step 4: Simplify right side
    215,450.33x = 38,485,571,937.67
  5. Step 5: Solve for x
    x = 38,485,571,937.67/215,450.33
  6. Step 6: Final answer
    x = 178,628.52

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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.