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Finding the Fourth Proportional to 438,336.96, 656,619.36 and 338,150.64

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Solution

The fourth proportional to 438,336.96, 656,619.36 and 338,150.64 is: 506,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,336.96 : 656,619.36 = 338,150.64 : x
  2. Step 2: Convert to fraction form
    438,336.96/656,619.36 = 338,150.64/x
  3. Step 3: Cross multiply
    438,336.96x = 656,619.36 × 338,150.64
  4. Step 4: Simplify right side
    438,336.96x = 222,036,256,820.39
  5. Step 5: Solve for x
    x = 222,036,256,820.39/438,336.96
  6. Step 6: Final answer
    x = 506,542.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.