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Finding the Fourth Proportional to 385,998.88, 532,662.87 and 213,919.34

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Solution

The fourth proportional to 385,998.88, 532,662.87 and 213,919.34 is: 295,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,998.88 : 532,662.87 = 213,919.34 : x
  2. Step 2: Convert to fraction form
    385,998.88/532,662.87 = 213,919.34/x
  3. Step 3: Cross multiply
    385,998.88x = 532,662.87 × 213,919.34
  4. Step 4: Simplify right side
    385,998.88x = 113,946,889,592.91
  5. Step 5: Solve for x
    x = 113,946,889,592.91/385,998.88
  6. Step 6: Final answer
    x = 295,200.05

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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.