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Finding the Fourth Proportional to 486,003.65, 670,685.45 and 271,143.77

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Solution

The fourth proportional to 486,003.65, 670,685.45 and 271,143.77 is: 374,178.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,003.65 : 670,685.45 = 271,143.77 : x
  2. Step 2: Convert to fraction form
    486,003.65/670,685.45 = 271,143.77/x
  3. Step 3: Cross multiply
    486,003.65x = 670,685.45 × 271,143.77
  4. Step 4: Simplify right side
    486,003.65x = 181,852,181,985.79
  5. Step 5: Solve for x
    x = 181,852,181,985.79/486,003.65
  6. Step 6: Final answer
    x = 374,178.64

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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.