Home / 419,965.38-630,037.36-135,672.23

Finding the Fourth Proportional to 419,965.38, 630,037.36 and 135,672.23

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Solution

The fourth proportional to 419,965.38, 630,037.36 and 135,672.23 is: 203,537.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,965.38 : 630,037.36 = 135,672.23 : x
  2. Step 2: Convert to fraction form
    419,965.38/630,037.36 = 135,672.23/x
  3. Step 3: Cross multiply
    419,965.38x = 630,037.36 × 135,672.23
  4. Step 4: Simplify right side
    419,965.38x = 85,478,573,614.51
  5. Step 5: Solve for x
    x = 85,478,573,614.51/419,965.38
  6. Step 6: Final answer
    x = 203,537.19

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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.