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Finding the Fourth Proportional to 486,009.50, 670,712.55 and 271,168.34

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Solution

The fourth proportional to 486,009.50, 670,712.55 and 271,168.34 is: 374,223.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,009.50 : 670,712.55 = 271,168.34 : x
  2. Step 2: Convert to fraction form
    486,009.50/670,712.55 = 271,168.34/x
  3. Step 3: Cross multiply
    486,009.50x = 670,712.55 × 271,168.34
  4. Step 4: Simplify right side
    486,009.50x = 181,876,008,800.67
  5. Step 5: Solve for x
    x = 181,876,008,800.67/486,009.50
  6. Step 6: Final answer
    x = 374,223.16

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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.