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Finding the Fourth Proportional to 485,903.68, 670,548.16 and 271,057.66

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Solution

The fourth proportional to 485,903.68, 670,548.16 and 271,057.66 is: 374,060.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,903.68 : 670,548.16 = 271,057.66 : x
  2. Step 2: Convert to fraction form
    485,903.68/670,548.16 = 271,057.66/x
  3. Step 3: Cross multiply
    485,903.68x = 670,548.16 × 271,057.66
  4. Step 4: Simplify right side
    485,903.68x = 181,757,215,166.91
  5. Step 5: Solve for x
    x = 181,757,215,166.91/485,903.68
  6. Step 6: Final answer
    x = 374,060.17

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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.