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Finding the Fourth Proportional to 321,686.15, 482,037.13 and 171,947.73

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Solution

The fourth proportional to 321,686.15, 482,037.13 and 171,947.73 is: 257,658.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,686.15 : 482,037.13 = 171,947.73 : x
  2. Step 2: Convert to fraction form
    321,686.15/482,037.13 = 171,947.73/x
  3. Step 3: Cross multiply
    321,686.15x = 482,037.13 × 171,947.73
  4. Step 4: Simplify right side
    321,686.15x = 82,885,190,279.21
  5. Step 5: Solve for x
    x = 82,885,190,279.21/321,686.15
  6. Step 6: Final answer
    x = 257,658.56

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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.