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Finding the Fourth Proportional to 322,416.92, 445,390.69 and 258,311.85

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Solution

The fourth proportional to 322,416.92, 445,390.69 and 258,311.85 is: 356,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,416.92 : 445,390.69 = 258,311.85 : x
  2. Step 2: Convert to fraction form
    322,416.92/445,390.69 = 258,311.85/x
  3. Step 3: Cross multiply
    322,416.92x = 445,390.69 × 258,311.85
  4. Step 4: Simplify right side
    322,416.92x = 115,049,692,460.90
  5. Step 5: Solve for x
    x = 115,049,692,460.90/322,416.92
  6. Step 6: Final answer
    x = 356,835.15

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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.