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Finding the Fourth Proportional to 486,346.72, 671,152.80 and 271,540

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Solution

The fourth proportional to 486,346.72, 671,152.80 and 271,540 is: 374,722.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,346.72 : 671,152.80 = 271,540 : x
  2. Step 2: Convert to fraction form
    486,346.72/671,152.80 = 271,540/x
  3. Step 3: Cross multiply
    486,346.72x = 671,152.80 × 271,540
  4. Step 4: Simplify right side
    486,346.72x = 182,244,831,312
  5. Step 5: Solve for x
    x = 182,244,831,312/486,346.72
  6. Step 6: Final answer
    x = 374,722.03

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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.