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Finding the Fourth Proportional to 498,292.46, 687,634 and 271,939.58

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Solution

The fourth proportional to 498,292.46, 687,634 and 271,939.58 is: 375,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,292.46 : 687,634 = 271,939.58 : x
  2. Step 2: Convert to fraction form
    498,292.46/687,634 = 271,939.58/x
  3. Step 3: Cross multiply
    498,292.46x = 687,634 × 271,939.58
  4. Step 4: Simplify right side
    498,292.46x = 186,994,901,153.72
  5. Step 5: Solve for x
    x = 186,994,901,153.72/498,292.46
  6. Step 6: Final answer
    x = 375,271.38

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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.