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Finding the Fourth Proportional to 220,142.30, 303,828.48 and 123,352.70

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Solution

The fourth proportional to 220,142.30, 303,828.48 and 123,352.70 is: 170,244.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,142.30 : 303,828.48 = 123,352.70 : x
  2. Step 2: Convert to fraction form
    220,142.30/303,828.48 = 123,352.70/x
  3. Step 3: Cross multiply
    220,142.30x = 303,828.48 × 123,352.70
  4. Step 4: Simplify right side
    220,142.30x = 37,478,063,344.90
  5. Step 5: Solve for x
    x = 37,478,063,344.90/220,142.30
  6. Step 6: Final answer
    x = 170,244.72

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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.