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Finding the Fourth Proportional to 354,018.16, 488,490.24 and 203,086

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Solution

The fourth proportional to 354,018.16, 488,490.24 and 203,086 is: 280,227.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,018.16 : 488,490.24 = 203,086 : x
  2. Step 2: Convert to fraction form
    354,018.16/488,490.24 = 203,086/x
  3. Step 3: Cross multiply
    354,018.16x = 488,490.24 × 203,086
  4. Step 4: Simplify right side
    354,018.16x = 99,205,528,880.64
  5. Step 5: Solve for x
    x = 99,205,528,880.64/354,018.16
  6. Step 6: Final answer
    x = 280,227.23

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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.