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Finding the Fourth Proportional to 486,665.94, 671,532.65 and 271,778.61

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Solution

The fourth proportional to 486,665.94, 671,532.65 and 271,778.61 is: 375,017.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,665.94 : 671,532.65 = 271,778.61 : x
  2. Step 2: Convert to fraction form
    486,665.94/671,532.65 = 271,778.61/x
  3. Step 3: Cross multiply
    486,665.94x = 671,532.65 × 271,778.61
  4. Step 4: Simplify right side
    486,665.94x = 182,508,208,827.72
  5. Step 5: Solve for x
    x = 182,508,208,827.72/486,665.94
  6. Step 6: Final answer
    x = 375,017.43

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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.