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Finding the Fourth Proportional to 320,286.20, 480,026.10 and 162,558.20

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Solution

The fourth proportional to 320,286.20, 480,026.10 and 162,558.20 is: 243,632.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,286.20 : 480,026.10 = 162,558.20 : x
  2. Step 2: Convert to fraction form
    320,286.20/480,026.10 = 162,558.20/x
  3. Step 3: Cross multiply
    320,286.20x = 480,026.10 × 162,558.20
  4. Step 4: Simplify right side
    320,286.20x = 78,032,178,769.02
  5. Step 5: Solve for x
    x = 78,032,178,769.02/320,286.20
  6. Step 6: Final answer
    x = 243,632.66

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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.