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Finding the Fourth Proportional to 460,359.21, 635,327.64 and 279,078.78

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Solution

The fourth proportional to 460,359.21, 635,327.64 and 279,078.78 is: 385,148.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,359.21 : 635,327.64 = 279,078.78 : x
  2. Step 2: Convert to fraction form
    460,359.21/635,327.64 = 279,078.78/x
  3. Step 3: Cross multiply
    460,359.21x = 635,327.64 × 279,078.78
  4. Step 4: Simplify right side
    460,359.21x = 177,306,462,671.48
  5. Step 5: Solve for x
    x = 177,306,462,671.48/460,359.21
  6. Step 6: Final answer
    x = 385,148.07

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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.