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Finding the Fourth Proportional to 486,292.86, 671,062.05 and 271,428.21

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Solution

The fourth proportional to 486,292.86, 671,062.05 and 271,428.21 is: 374,558.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,292.86 : 671,062.05 = 271,428.21 : x
  2. Step 2: Convert to fraction form
    486,292.86/671,062.05 = 271,428.21/x
  3. Step 3: Cross multiply
    486,292.86x = 671,062.05 × 271,428.21
  4. Step 4: Simplify right side
    486,292.86x = 182,145,171,030.43
  5. Step 5: Solve for x
    x = 182,145,171,030.43/486,292.86
  6. Step 6: Final answer
    x = 374,558.60

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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.