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Finding the Fourth Proportional to 323,601.80, 485,402.31 and 86,944.48

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Solution

The fourth proportional to 323,601.80, 485,402.31 and 86,944.48 is: 130,416.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,601.80 : 485,402.31 = 86,944.48 : x
  2. Step 2: Convert to fraction form
    323,601.80/485,402.31 = 86,944.48/x
  3. Step 3: Cross multiply
    323,601.80x = 485,402.31 × 86,944.48
  4. Step 4: Simplify right side
    323,601.80x = 42,203,050,220.24
  5. Step 5: Solve for x
    x = 42,203,050,220.24/323,601.80
  6. Step 6: Final answer
    x = 130,416.61

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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.