Home / 320,814.10-481,221.15-291,289.60

Finding the Fourth Proportional to 320,814.10, 481,221.15 and 291,289.60

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Solution

The fourth proportional to 320,814.10, 481,221.15 and 291,289.60 is: 436,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,814.10 : 481,221.15 = 291,289.60 : x
  2. Step 2: Convert to fraction form
    320,814.10/481,221.15 = 291,289.60/x
  3. Step 3: Cross multiply
    320,814.10x = 481,221.15 × 291,289.60
  4. Step 4: Simplify right side
    320,814.10x = 140,174,716,295.04
  5. Step 5: Solve for x
    x = 140,174,716,295.04/320,814.10
  6. Step 6: Final answer
    x = 436,934.40

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Similar ratio
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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.