Home / 320,418.10-479,971.05-162,735.40

Finding the Fourth Proportional to 320,418.10, 479,971.05 and 162,735.40

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Solution

The fourth proportional to 320,418.10, 479,971.05 and 162,735.40 is: 243,769.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,418.10 : 479,971.05 = 162,735.40 : x
  2. Step 2: Convert to fraction form
    320,418.10/479,971.05 = 162,735.40/x
  3. Step 3: Cross multiply
    320,418.10x = 479,971.05 × 162,735.40
  4. Step 4: Simplify right side
    320,418.10x = 78,108,280,810.17
  5. Step 5: Solve for x
    x = 78,108,280,810.17/320,418.10
  6. Step 6: Final answer
    x = 243,769.88

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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.