Home / 425,919.36-638,836.52-173,214.76

Finding the Fourth Proportional to 425,919.36, 638,836.52 and 173,214.76

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Solution

The fourth proportional to 425,919.36, 638,836.52 and 173,214.76 is: 259,804.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,919.36 : 638,836.52 = 173,214.76 : x
  2. Step 2: Convert to fraction form
    425,919.36/638,836.52 = 173,214.76/x
  3. Step 3: Cross multiply
    425,919.36x = 638,836.52 × 173,214.76
  4. Step 4: Simplify right side
    425,919.36x = 110,655,914,491.04
  5. Step 5: Solve for x
    x = 110,655,914,491.04/425,919.36
  6. Step 6: Final answer
    x = 259,804.85

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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.