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Finding the Fourth Proportional to 485,988.33, 670,650.94 and 271,122.87

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Solution

The fourth proportional to 485,988.33, 670,650.94 and 271,122.87 is: 374,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,988.33 : 670,650.94 = 271,122.87 : x
  2. Step 2: Convert to fraction form
    485,988.33/670,650.94 = 271,122.87/x
  3. Step 3: Cross multiply
    485,988.33x = 670,650.94 × 271,122.87
  4. Step 4: Simplify right side
    485,988.33x = 181,828,807,621.00
  5. Step 5: Solve for x
    x = 181,828,807,621.00/485,988.33
  6. Step 6: Final answer
    x = 374,142.33

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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.