Home / 213,434.73-320,164.62-80,316.12

Finding the Fourth Proportional to 213,434.73, 320,164.62 and 80,316.12

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Solution

The fourth proportional to 213,434.73, 320,164.62 and 80,316.12 is: 120,478.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,434.73 : 320,164.62 = 80,316.12 : x
  2. Step 2: Convert to fraction form
    213,434.73/320,164.62 = 80,316.12/x
  3. Step 3: Cross multiply
    213,434.73x = 320,164.62 × 80,316.12
  4. Step 4: Simplify right side
    213,434.73x = 25,714,380,039.67
  5. Step 5: Solve for x
    x = 25,714,380,039.67/213,434.73
  6. Step 6: Final answer
    x = 120,478.89

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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.