Home / 318,618.24-439,632.45-203,808.96

Finding the Fourth Proportional to 318,618.24, 439,632.45 and 203,808.96

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Solution

The fourth proportional to 318,618.24, 439,632.45 and 203,808.96 is: 281,217.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,618.24 : 439,632.45 = 203,808.96 : x
  2. Step 2: Convert to fraction form
    318,618.24/439,632.45 = 203,808.96/x
  3. Step 3: Cross multiply
    318,618.24x = 439,632.45 × 203,808.96
  4. Step 4: Simplify right side
    318,618.24x = 89,601,032,416.75
  5. Step 5: Solve for x
    x = 89,601,032,416.75/318,618.24
  6. Step 6: Final answer
    x = 281,217.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.