Home / 220,239.10-303,857.68-123,428.81

Finding the Fourth Proportional to 220,239.10, 303,857.68 and 123,428.81

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Solution

The fourth proportional to 220,239.10, 303,857.68 and 123,428.81 is: 170,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,239.10 : 303,857.68 = 123,428.81 : x
  2. Step 2: Convert to fraction form
    220,239.10/303,857.68 = 123,428.81/x
  3. Step 3: Cross multiply
    220,239.10x = 303,857.68 × 123,428.81
  4. Step 4: Simplify right side
    220,239.10x = 37,504,792,534.26
  5. Step 5: Solve for x
    x = 37,504,792,534.26/220,239.10
  6. Step 6: Final answer
    x = 170,291.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.