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Finding the Fourth Proportional to 275,679.88, 413,209.87 and 140,364.12

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Solution

The fourth proportional to 275,679.88, 413,209.87 and 140,364.12 is: 210,388.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,679.88 : 413,209.87 = 140,364.12 : x
  2. Step 2: Convert to fraction form
    275,679.88/413,209.87 = 140,364.12/x
  3. Step 3: Cross multiply
    275,679.88x = 413,209.87 × 140,364.12
  4. Step 4: Simplify right side
    275,679.88x = 57,999,839,777.86
  5. Step 5: Solve for x
    x = 57,999,839,777.86/275,679.88
  6. Step 6: Final answer
    x = 210,388.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.