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Finding the Fourth Proportional to 488,630.94, 674,335.59 and 281,822.42

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Solution

The fourth proportional to 488,630.94, 674,335.59 and 281,822.42 is: 388,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,630.94 : 674,335.59 = 281,822.42 : x
  2. Step 2: Convert to fraction form
    488,630.94/674,335.59 = 281,822.42/x
  3. Step 3: Cross multiply
    488,630.94x = 674,335.59 × 281,822.42
  4. Step 4: Simplify right side
    488,630.94x = 190,042,888,494.93
  5. Step 5: Solve for x
    x = 190,042,888,494.93/488,630.94
  6. Step 6: Final answer
    x = 388,929.30

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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.