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Finding the Fourth Proportional to 486,210.79, 671,004.57 and 271,392.72

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Solution

The fourth proportional to 486,210.79, 671,004.57 and 271,392.72 is: 374,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,210.79 : 671,004.57 = 271,392.72 : x
  2. Step 2: Convert to fraction form
    486,210.79/671,004.57 = 271,392.72/x
  3. Step 3: Cross multiply
    486,210.79x = 671,004.57 × 271,392.72
  4. Step 4: Simplify right side
    486,210.79x = 182,105,755,384.73
  5. Step 5: Solve for x
    x = 182,105,755,384.73/486,210.79
  6. Step 6: Final answer
    x = 374,540.75

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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.