Home / 425,416.13-638,216.46-125,917.76

Finding the Fourth Proportional to 425,416.13, 638,216.46 and 125,917.76

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Solution

The fourth proportional to 425,416.13, 638,216.46 and 125,917.76 is: 188,903.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,416.13 : 638,216.46 = 125,917.76 : x
  2. Step 2: Convert to fraction form
    425,416.13/638,216.46 = 125,917.76/x
  3. Step 3: Cross multiply
    425,416.13x = 638,216.46 × 125,917.76
  4. Step 4: Simplify right side
    425,416.13x = 80,362,787,038.33
  5. Step 5: Solve for x
    x = 80,362,787,038.33/425,416.13
  6. Step 6: Final answer
    x = 188,903.95

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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.