Home / 415,719.66-623,644.82-135,171.30

Finding the Fourth Proportional to 415,719.66, 623,644.82 and 135,171.30

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Solution

The fourth proportional to 415,719.66, 623,644.82 and 135,171.30 is: 202,778.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,719.66 : 623,644.82 = 135,171.30 : x
  2. Step 2: Convert to fraction form
    415,719.66/623,644.82 = 135,171.30/x
  3. Step 3: Cross multiply
    415,719.66x = 623,644.82 × 135,171.30
  4. Step 4: Simplify right side
    415,719.66x = 84,298,881,057.67
  5. Step 5: Solve for x
    x = 84,298,881,057.67/415,719.66
  6. Step 6: Final answer
    x = 202,778.19

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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.