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Finding the Fourth Proportional to 213,995.20, 320,992.04 and 64,234.84

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Solution

The fourth proportional to 213,995.20, 320,992.04 and 64,234.84 is: 96,352.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,995.20 : 320,992.04 = 64,234.84 : x
  2. Step 2: Convert to fraction form
    213,995.20/320,992.04 = 64,234.84/x
  3. Step 3: Cross multiply
    213,995.20x = 320,992.04 × 64,234.84
  4. Step 4: Simplify right side
    213,995.20x = 20,618,872,330.67
  5. Step 5: Solve for x
    x = 20,618,872,330.67/213,995.20
  6. Step 6: Final answer
    x = 96,352.03

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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.