Home / 320,432.10-479,992.05-162,749.40

Finding the Fourth Proportional to 320,432.10, 479,992.05 and 162,749.40

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Solution

The fourth proportional to 320,432.10, 479,992.05 and 162,749.40 is: 243,790.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,432.10 : 479,992.05 = 162,749.40 : x
  2. Step 2: Convert to fraction form
    320,432.10/479,992.05 = 162,749.40/x
  3. Step 3: Cross multiply
    320,432.10x = 479,992.05 × 162,749.40
  4. Step 4: Simplify right side
    320,432.10x = 78,118,418,142.27
  5. Step 5: Solve for x
    x = 78,118,418,142.27/320,432.10
  6. Step 6: Final answer
    x = 243,790.86

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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.