Home / 320,436.10-479,998.05-162,753.40

Finding the Fourth Proportional to 320,436.10, 479,998.05 and 162,753.40

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Solution

The fourth proportional to 320,436.10, 479,998.05 and 162,753.40 is: 243,796.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,436.10 : 479,998.05 = 162,753.40 : x
  2. Step 2: Convert to fraction form
    320,436.10/479,998.05 = 162,753.40/x
  3. Step 3: Cross multiply
    320,436.10x = 479,998.05 × 162,753.40
  4. Step 4: Simplify right side
    320,436.10x = 78,121,314,630.87
  5. Step 5: Solve for x
    x = 78,121,314,630.87/320,436.10
  6. Step 6: Final answer
    x = 243,796.86

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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.