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Finding the Fourth Proportional to 385,620.56, 532,161.84 and 222,186.92

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Solution

The fourth proportional to 385,620.56, 532,161.84 and 222,186.92 is: 306,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,620.56 : 532,161.84 = 222,186.92 : x
  2. Step 2: Convert to fraction form
    385,620.56/532,161.84 = 222,186.92/x
  3. Step 3: Cross multiply
    385,620.56x = 532,161.84 × 222,186.92
  4. Step 4: Simplify right side
    385,620.56x = 118,239,400,171.13
  5. Step 5: Solve for x
    x = 118,239,400,171.13/385,620.56
  6. Step 6: Final answer
    x = 306,621.10

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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.