Home / 289,234.12-399,140.04-161,910.76

Finding the Fourth Proportional to 289,234.12, 399,140.04 and 161,910.76

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Solution

The fourth proportional to 289,234.12, 399,140.04 and 161,910.76 is: 223,435.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,234.12 : 399,140.04 = 161,910.76 : x
  2. Step 2: Convert to fraction form
    289,234.12/399,140.04 = 161,910.76/x
  3. Step 3: Cross multiply
    289,234.12x = 399,140.04 × 161,910.76
  4. Step 4: Simplify right side
    289,234.12x = 64,625,067,222.83
  5. Step 5: Solve for x
    x = 64,625,067,222.83/289,234.12
  6. Step 6: Final answer
    x = 223,435.14

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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.