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Finding the Fourth Proportional to 220,245.09, 303,865.95 and 123,434.82

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Solution

The fourth proportional to 220,245.09, 303,865.95 and 123,434.82 is: 170,299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,245.09 : 303,865.95 = 123,434.82 : x
  2. Step 2: Convert to fraction form
    220,245.09/303,865.95 = 123,434.82/x
  3. Step 3: Cross multiply
    220,245.09x = 303,865.95 × 123,434.82
  4. Step 4: Simplify right side
    220,245.09x = 37,507,638,842.38
  5. Step 5: Solve for x
    x = 37,507,638,842.38/220,245.09
  6. Step 6: Final answer
    x = 170,299.55

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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.