Home / 438,918.40-658,183.20-202,139.20

Finding the Fourth Proportional to 438,918.40, 658,183.20 and 202,139.20

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Solution

The fourth proportional to 438,918.40, 658,183.20 and 202,139.20 is: 303,119.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,918.40 : 658,183.20 = 202,139.20 : x
  2. Step 2: Convert to fraction form
    438,918.40/658,183.20 = 202,139.20/x
  3. Step 3: Cross multiply
    438,918.40x = 658,183.20 × 202,139.20
  4. Step 4: Simplify right side
    438,918.40x = 133,044,625,501.44
  5. Step 5: Solve for x
    x = 133,044,625,501.44/438,918.40
  6. Step 6: Final answer
    x = 303,119.27

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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.