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Finding the Fourth Proportional to 309,306.72, 427,048.96 and 237,558.56

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Solution

The fourth proportional to 309,306.72, 427,048.96 and 237,558.56 is: 327,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,306.72 : 427,048.96 = 237,558.56 : x
  2. Step 2: Convert to fraction form
    309,306.72/427,048.96 = 237,558.56/x
  3. Step 3: Cross multiply
    309,306.72x = 427,048.96 × 237,558.56
  4. Step 4: Simplify right side
    309,306.72x = 101,449,135,987.10
  5. Step 5: Solve for x
    x = 101,449,135,987.10/309,306.72
  6. Step 6: Final answer
    x = 327,988.79

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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.