Home / 215,038.60-322,448.55-126,319.30

Finding the Fourth Proportional to 215,038.60, 322,448.55 and 126,319.30

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Solution

The fourth proportional to 215,038.60, 322,448.55 and 126,319.30 is: 189,414.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,038.60 : 322,448.55 = 126,319.30 : x
  2. Step 2: Convert to fraction form
    215,038.60/322,448.55 = 126,319.30/x
  3. Step 3: Cross multiply
    215,038.60x = 322,448.55 × 126,319.30
  4. Step 4: Simplify right side
    215,038.60x = 40,731,475,122.02
  5. Step 5: Solve for x
    x = 40,731,475,122.02/215,038.60
  6. Step 6: Final answer
    x = 189,414.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.