Home / 215,129.40-322,305.30-190,246.20

Finding the Fourth Proportional to 215,129.40, 322,305.30 and 190,246.20

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Solution

The fourth proportional to 215,129.40, 322,305.30 and 190,246.20 is: 285,025.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,129.40 : 322,305.30 = 190,246.20 : x
  2. Step 2: Convert to fraction form
    215,129.40/322,305.30 = 190,246.20/x
  3. Step 3: Cross multiply
    215,129.40x = 322,305.30 × 190,246.20
  4. Step 4: Simplify right side
    215,129.40x = 61,317,358,564.86
  5. Step 5: Solve for x
    x = 61,317,358,564.86/215,129.40
  6. Step 6: Final answer
    x = 285,025.47

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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.