Home / 320,427.10-479,984.55-162,744.40

Finding the Fourth Proportional to 320,427.10, 479,984.55 and 162,744.40

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Solution

The fourth proportional to 320,427.10, 479,984.55 and 162,744.40 is: 243,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,427.10 : 479,984.55 = 162,744.40 : x
  2. Step 2: Convert to fraction form
    320,427.10/479,984.55 = 162,744.40/x
  3. Step 3: Cross multiply
    320,427.10x = 479,984.55 × 162,744.40
  4. Step 4: Simplify right side
    320,427.10x = 78,114,797,599.02
  5. Step 5: Solve for x
    x = 78,114,797,599.02/320,427.10
  6. Step 6: Final answer
    x = 243,783.37

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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.