Home / 278,246.58-417,047.49-128,171.94

Finding the Fourth Proportional to 278,246.58, 417,047.49 and 128,171.94

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Solution

The fourth proportional to 278,246.58, 417,047.49 and 128,171.94 is: 192,109.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,246.58 : 417,047.49 = 128,171.94 : x
  2. Step 2: Convert to fraction form
    278,246.58/417,047.49 = 128,171.94/x
  3. Step 3: Cross multiply
    278,246.58x = 417,047.49 × 128,171.94
  4. Step 4: Simplify right side
    278,246.58x = 53,453,785,865.43
  5. Step 5: Solve for x
    x = 53,453,785,865.43/278,246.58
  6. Step 6: Final answer
    x = 192,109.41

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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.