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Finding the Fourth Proportional to 385,818.12, 532,414.08 and 216,043.56

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Solution

The fourth proportional to 385,818.12, 532,414.08 and 216,043.56 is: 298,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,818.12 : 532,414.08 = 216,043.56 : x
  2. Step 2: Convert to fraction form
    385,818.12/532,414.08 = 216,043.56/x
  3. Step 3: Cross multiply
    385,818.12x = 532,414.08 × 216,043.56
  4. Step 4: Simplify right side
    385,818.12x = 115,024,633,237.33
  5. Step 5: Solve for x
    x = 115,024,633,237.33/385,818.12
  6. Step 6: Final answer
    x = 298,131.76

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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.