Home / 204,509.21-306,903.92-71,389.49

Finding the Fourth Proportional to 204,509.21, 306,903.92 and 71,389.49

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Solution

The fourth proportional to 204,509.21, 306,903.92 and 71,389.49 is: 107,133.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,509.21 : 306,903.92 = 71,389.49 : x
  2. Step 2: Convert to fraction form
    204,509.21/306,903.92 = 71,389.49/x
  3. Step 3: Cross multiply
    204,509.21x = 306,903.92 × 71,389.49
  4. Step 4: Simplify right side
    204,509.21x = 21,909,712,436.33
  5. Step 5: Solve for x
    x = 21,909,712,436.33/204,509.21
  6. Step 6: Final answer
    x = 107,133.14

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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.