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Finding the Fourth Proportional to 385,612.56, 532,150.80 and 222,178.92

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Solution

The fourth proportional to 385,612.56, 532,150.80 and 222,178.92 is: 306,610.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,612.56 : 532,150.80 = 222,178.92 : x
  2. Step 2: Convert to fraction form
    385,612.56/532,150.80 = 222,178.92/x
  3. Step 3: Cross multiply
    385,612.56x = 532,150.80 × 222,178.92
  4. Step 4: Simplify right side
    385,612.56x = 118,232,690,021.14
  5. Step 5: Solve for x
    x = 118,232,690,021.14/385,612.56
  6. Step 6: Final answer
    x = 306,610.06

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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.