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Finding the Fourth Proportional to 223,993.72, 309,096.66 and 123,391.72

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Solution

The fourth proportional to 223,993.72, 309,096.66 and 123,391.72 is: 170,272.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,993.72 : 309,096.66 = 123,391.72 : x
  2. Step 2: Convert to fraction form
    223,993.72/309,096.66 = 123,391.72/x
  3. Step 3: Cross multiply
    223,993.72x = 309,096.66 × 123,391.72
  4. Step 4: Simplify right side
    223,993.72x = 38,139,968,523.66
  5. Step 5: Solve for x
    x = 38,139,968,523.66/223,993.72
  6. Step 6: Final answer
    x = 170,272.49

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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.