Home / 638,921.21-958,406.12-165,607.97

Finding the Fourth Proportional to 638,921.21, 958,406.12 and 165,607.97

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Solution

The fourth proportional to 638,921.21, 958,406.12 and 165,607.97 is: 248,418.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,921.21 : 958,406.12 = 165,607.97 : x
  2. Step 2: Convert to fraction form
    638,921.21/958,406.12 = 165,607.97/x
  3. Step 3: Cross multiply
    638,921.21x = 958,406.12 × 165,607.97
  4. Step 4: Simplify right side
    638,921.21x = 158,719,691,140.74
  5. Step 5: Solve for x
    x = 158,719,691,140.74/638,921.21
  6. Step 6: Final answer
    x = 248,418.25

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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.