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Finding the Fourth Proportional to 355,240.30, 490,448.86 and 231,179.49

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Solution

The fourth proportional to 355,240.30, 490,448.86 and 231,179.49 is: 319,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,240.30 : 490,448.86 = 231,179.49 : x
  2. Step 2: Convert to fraction form
    355,240.30/490,448.86 = 231,179.49/x
  3. Step 3: Cross multiply
    355,240.30x = 490,448.86 × 231,179.49
  4. Step 4: Simplify right side
    355,240.30x = 113,381,717,325.88
  5. Step 5: Solve for x
    x = 113,381,717,325.88/355,240.30
  6. Step 6: Final answer
    x = 319,169.07

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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.