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Finding the Fourth Proportional to 385,958.52, 532,621.98 and 216,189

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Solution

The fourth proportional to 385,958.52, 532,621.98 and 216,189 is: 298,340.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,958.52 : 532,621.98 = 216,189 : x
  2. Step 2: Convert to fraction form
    385,958.52/532,621.98 = 216,189/x
  3. Step 3: Cross multiply
    385,958.52x = 532,621.98 × 216,189
  4. Step 4: Simplify right side
    385,958.52x = 115,147,013,234.22
  5. Step 5: Solve for x
    x = 115,147,013,234.22/385,958.52
  6. Step 6: Final answer
    x = 298,340.38

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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.