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Finding the Fourth Proportional to 486,221.40, 671,023.53 and 271,393.71

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Solution

The fourth proportional to 486,221.40, 671,023.53 and 271,393.71 is: 374,544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,221.40 : 671,023.53 = 271,393.71 : x
  2. Step 2: Convert to fraction form
    486,221.40/671,023.53 = 271,393.71/x
  3. Step 3: Cross multiply
    486,221.40x = 671,023.53 × 271,393.71
  4. Step 4: Simplify right side
    486,221.40x = 182,111,565,304.00
  5. Step 5: Solve for x
    x = 182,111,565,304.00/486,221.40
  6. Step 6: Final answer
    x = 374,544.53

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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.