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Finding the Fourth Proportional to 383,614.68, 529,439.52 and 220,335.40

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Solution

The fourth proportional to 383,614.68, 529,439.52 and 220,335.40 is: 304,092.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,614.68 : 529,439.52 = 220,335.40 : x
  2. Step 2: Convert to fraction form
    383,614.68/529,439.52 = 220,335.40/x
  3. Step 3: Cross multiply
    383,614.68x = 529,439.52 × 220,335.40
  4. Step 4: Simplify right side
    383,614.68x = 116,654,268,415.01
  5. Step 5: Solve for x
    x = 116,654,268,415.01/383,614.68
  6. Step 6: Final answer
    x = 304,092.29

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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.