Home / 419,214.72-628,822.37-134,905.21

Finding the Fourth Proportional to 419,214.72, 628,822.37 and 134,905.21

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Solution

The fourth proportional to 419,214.72, 628,822.37 and 134,905.21 is: 202,357.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,214.72 : 628,822.37 = 134,905.21 : x
  2. Step 2: Convert to fraction form
    419,214.72/628,822.37 = 134,905.21/x
  3. Step 3: Cross multiply
    419,214.72x = 628,822.37 × 134,905.21
  4. Step 4: Simplify right side
    419,214.72x = 84,831,413,203.02
  5. Step 5: Solve for x
    x = 84,831,413,203.02/419,214.72
  6. Step 6: Final answer
    x = 202,357.91

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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.