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Finding the Fourth Proportional to 372,906.40, 559,359.60 and 271,429.60

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Solution

The fourth proportional to 372,906.40, 559,359.60 and 271,429.60 is: 407,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,906.40 : 559,359.60 = 271,429.60 : x
  2. Step 2: Convert to fraction form
    372,906.40/559,359.60 = 271,429.60/x
  3. Step 3: Cross multiply
    372,906.40x = 559,359.60 × 271,429.60
  4. Step 4: Simplify right side
    372,906.40x = 151,826,752,484.16
  5. Step 5: Solve for x
    x = 151,826,752,484.16/372,906.40
  6. Step 6: Final answer
    x = 407,144.40

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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.