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Finding the Fourth Proportional to 485,883.63, 670,520.43 and 271,018.17

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Solution

The fourth proportional to 485,883.63, 670,520.43 and 271,018.17 is: 374,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,883.63 : 670,520.43 = 271,018.17 : x
  2. Step 2: Convert to fraction form
    485,883.63/670,520.43 = 271,018.17/x
  3. Step 3: Cross multiply
    485,883.63x = 670,520.43 × 271,018.17
  4. Step 4: Simplify right side
    485,883.63x = 181,723,219,886.21
  5. Step 5: Solve for x
    x = 181,723,219,886.21/485,883.63
  6. Step 6: Final answer
    x = 374,005.64

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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.