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Finding the Fourth Proportional to 387,879.64, 534,933.19 and 271,533.51

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Solution

The fourth proportional to 387,879.64, 534,933.19 and 271,533.51 is: 374,477.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,879.64 : 534,933.19 = 271,533.51 : x
  2. Step 2: Convert to fraction form
    387,879.64/534,933.19 = 271,533.51/x
  3. Step 3: Cross multiply
    387,879.64x = 534,933.19 × 271,533.51
  4. Step 4: Simplify right side
    387,879.64x = 145,252,287,035.61
  5. Step 5: Solve for x
    x = 145,252,287,035.61/387,879.64
  6. Step 6: Final answer
    x = 374,477.73

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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.