Home / 430,588.26-645,905.61-131,078.34

Finding the Fourth Proportional to 430,588.26, 645,905.61 and 131,078.34

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Solution

The fourth proportional to 430,588.26, 645,905.61 and 131,078.34 is: 196,624.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,588.26 : 645,905.61 = 131,078.34 : x
  2. Step 2: Convert to fraction form
    430,588.26/645,905.61 = 131,078.34/x
  3. Step 3: Cross multiply
    430,588.26x = 645,905.61 × 131,078.34
  4. Step 4: Simplify right side
    430,588.26x = 84,664,235,155.49
  5. Step 5: Solve for x
    x = 84,664,235,155.49/430,588.26
  6. Step 6: Final answer
    x = 196,624.58

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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.